Number 51 facts
The odd number 51 is spelled 🔊, and written in words: fifty-one. The ordinal number 51st is said 🔊 and written as: fifty-first. Phone prefix +51 or 0051. The meaning of the number 51 in Maths: Is it Prime? Factorization and prime factors tree. The square root and cube root of 51. What is 51 in computer science, numerology, codes and images, photo art, writing and naming in other languages. Other interesting facts, videos, comments (1), news related to 51. ‹‹ 50 52 ››
Interesting facts about the number 51

Asteroids
- (51) Nemausa is asteroid number 51. It was discovered by J. J. P. Laurent from Nimes on 1/22/1858.
Aircrafts and flights
- The North American P-51 Mustang is a long-range, single-engine fighter aircraft that entered service with the Allied air forces mid-World War II. It was one of the iconic fighter planes of the contest.
Areas, mountains and surfaces
- The total area of Halmahera is 6,970 square miles (18,040 square km). Country Indonesia (North Maluku). 51th largest island in the world.
Astrology
- It is one of the lucky numbers for the zodiac sign Gemini.
- What is astrology and what is it for?
Distances
- There is a 32 miles (51 km) direct distance between Amritsar (India) and Lahore (Pakistan).
- There is a 51 miles (82 km) direct distance between Anshan (China) and Shenyang (China).
- There is a 51 miles (82 km) direct distance between Campinas (Brazil) and Guarulhos (Brazil).
- There is a 51 miles (82 km) direct distance between Caracas (Venezuela) and Maracay (Venezuela).
- More distances ...
- There is a 32 miles (51 km) direct distance between Dongguan (China) and Guangzhou (China).
- There is a 51 miles (81 km) direct distance between Erbil (Iraq) and Mosul (Iraq).
- There is a 51 miles (82 km) direct distance between Changshu City (China) and Shanghai (China).
- There is a 32 miles (51 km) direct distance between Ibadan (Nigeria) and Oyo (Nigeria).
- There is a 51 miles (82 km) direct distance between Malang (Indonesia) and Surabaya (Indonesia).
- There is a 32 miles (51 km) direct distance between Saitama (Japan) and Yokohama (Japan).
- There is a 51 miles (82 km) direct distance between Shanghai (China) and Suzhou (China).
Games
History and politics
- ISO 3166 country codes for Armenia are AM, ARM, 051 and internet top-level domain is .am
- United Nations Security Council Resolution number 51, adopted 3 June 1948. Commission relating to India, Pakistan, and Kashmir. Resolution text.
In other fields
- Area 51 (Atomic Energy Commission with the designation of Area 51) is a territorial extension in Nevada, United States, owned by the North American government. It is very popular due to the fact that trial experiments with secret technologies and new military aircraft have been developed there for years.
- Area 51, also known as Groom Lake or Homey Airport is a remote detachment from Nellis Air Force Base. The secretive nature and undoubted connection to classified aircraft investigations, along with reports of strange phenomena, have led to Area 51 becoming the realm of UFOs and conspiracy theories.
Mathematics
- 51 is the 5th centered pentagonal number
Example of 4th centered pentagonal number with 31 dots. - 51 is the 6th Motzkin number.
Mobile and telephony
- Number 51 or +51 or 0051 is a dial the international call prefix for Peru. (00/+) is dial the international call prefix.
Science
- Antimony is the chemical element in the periodic table that has the symbol Sb and atomic number 51.
Sports
- The best athletes to wear number 51
Dick Butkus, NFL; Ichiro Suzuki, MLB; Randy Cross, NFL; Randy Johnson, MLB; Jim Ringo, NFL
Tv, movies and cinematography
- I Spent 24 Hours Straight At Area 51
- Area 51 is a film written and directed by Oren Peli.
- Planet 51 is a Spanish animated film directed by Jorge Blanco and written by Joe Stillman, screenwriter of Shrek.
Please write us
If you know something interesting about the number 51 or any natural number (positive integer), please write to us.What is 51 in other units
The number 51 converted to a Mayan number is |
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Decimal and Mayan number conversions. |
Weight conversion
51 kilograms (kg) = 112.4 pounds (lbs)
51 pounds (lbs) = 23.1 kilograms (kg)
Length conversion
51 kilometers (km) equals to 31.690 miles (mi).
51 miles (mi) equals to 82.077 kilometers (km).
51 meters (m) equals to 82.077 feet (ft).
51 feet (ft) equals 15.545 meters (m).
51 centimeters (cm) equals to 20.1 inches (in).
51 inches (in) equals to 129.5 centimeters (cm).
Temperature conversion
51° Fahrenheit (°F) equals to 10.6° Celsius (°C)
51° Celsius (°C) equals to 123.8° Fahrenheit (°F)
Power conversion
51 Horsepower (hp) equals to 37.51 kilowatts (kW)
51 kilowatts (kW) equals to 69.35 horsepower (hp)
Codes and images of the number 51
Number 51 morse code: ..... .----Sign language for number 51:


Number 51 in braille:
Images of the number | |
Image (1) of the number | Image (2) of the number |
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More images, other sizes, codes and colors ... | |
Number 51 infographic![]() |
Year 51 AD
Gregorian, Hebrew, Islamic, Persian and Buddhist Year (Calendar)
Gregorian year 51 is Buddhist year 594.Buddhist year 51 is Gregorian year 492 a. C.
Gregorian year 51 is Islamic year -589 or -588.
Islamic year 51 is Gregorian year 671 or 672.
Gregorian year 51 is Persian year -572 or -571.
Persian year 51 is Gregorian 672 or 673.
Gregorian year 51 is Hebrew year 3811 or 3812.
Hebrew year 51 is Gregorian year 3709 a. C.
The Buddhist calendar is used in Sri Lanka, Cambodia, Laos, Thailand, and Burma. The Persian calendar is the official calendar in Iran and Afghanistan.
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Advanced math operations
Is Prime?
The number 51 is not a prime number. The closest prime numbers are 47, 53.
The 51st prime number in order is 233.
Factorization and factors (dividers)
The prime factors of 51 are 3 * 17
The factors of 51 are 1, 3, 17, 51.
Total factors 4.
Sum of factors 72 (21).
Prime factor tree
Powers
The second power of 512 is 2.601.
The third power of 513 is 132.651.
Roots
The square root √51 is 7,141428.
The cube root of 3√51 is 3,70843.
Logarithms
The natural logarithm of No. ln 51 = loge 51 = 3,931826.
The logarithm to base 10 of No. log10 51 = 1,70757.
The Napierian logarithm of No. log1/e 51 = -3,931826.
Trigonometric functions
The cosine of 51 is 0,742154.The sine of 51 is 0,670229.
The tangent of 51 is 0,903086.
Number 51 in Computer Science
Code type | Code value |
---|---|
ASCII Html | 3 Digit 3 3 (ISO 8859-1 Characters) |
Unix time | Unix time 51 is equal to Thursday Jan. 1, 1970, 12:51 a.m. GMT |
IPv4, IPv6 | Number 51 internet address in dotted format v4 0.0.0.51, v6 ::33 |
51 Decimal | = 110011 Binary |
51 Decimal | = 1220 Ternary |
51 Decimal | = 63 Octal |
51 Decimal | = 33 Hexadecimal (0x33 hex) |
51 BASE64 | NTE= |
51 MD5 | 2838023a778dfaecdc212708f721b788 |
51 SHA1 | b7eb6c689c037217079766fdb77c3bac3e51cb4c |
51 SHA224 | c49bd5f2fdeb86ea2c25f760f88f211e8e26806c2274fdc8357307b2 |
51 SHA256 | 031b4af5197ec30a926f48cf40e11a7dbc470048a21e4003b7a3c07c5dab1baa |
51 SHA384 | 84da9fff3c69b55cb657a59092088110af39f4cc5200cfaf442c0e7b2376e373ace4291d30b77e0c231234c33b1f888f |
More SHA codes related to the number 51 ... |
If you know something interesting about the 51 number that you did not find on this page, do not hesitate to write us here.
Numerology 51
More about numerology 51 ...
№ 51 in other languages
Spanish: | 🔊 (número 51) | cincuenta y uno |
German: | 🔊 (Nummer 51) | einundfünfzig |
French: | 🔊 (nombre 51) | cinquante et un |
Portuguese: | 🔊 (número 51) | cinquenta e um |
Hindi: | 🔊 (संख्या 51) | इक्यावन |
Chinese: | 🔊 (数 51) | 五十一 |
Arabian: | 🔊 (عدد 51) | واحد و خمسون |
Czech: | 🔊 (číslo 51) | padesát jedna |
Korean: | 🔊 (번호 51) | 오십일 |
Danish: | 🔊 (nummer 51) | enoghalvtreds |
Hebrew: | (מספר 51) | חמישים ואחת |
Dutch: | 🔊 (nummer 51) | eenenvijftig |
Japanese: | 🔊 (数 51) | 五十一 |
Indonesian: | 🔊 (jumlah 51) | lima puluh satu |
Italian: | 🔊 (numero 51) | cinquantuno |
Norwegian: | 🔊 (nummer 51) | femti-en |
Polish: | 🔊 (liczba 51) | pięćdziesiąt jeden |
Russian: | 🔊 (номер 51) | пятьдесят один |
Turkish: | 🔊 (numara 51) | ellibir |
Thai: | 🔊 (จำนวน 51) | ห้าสิบเอ็ด |
Ukrainian: | 🔊 (номер 51) | п'ятдесят один |
Vietnamese: | 🔊 (con số 51) | năm mươi mốt |
Other languages ... |
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Comment
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Comments
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Ayomide Awoniyi Oct. 28, 2023
51 is a great number. (A great number is any composite number which cannot be represented as the sum of two prime numbers)
LIST OF GREAT NUMBERS: 27, 35, 51, 57, 65, 77, 87, 93, 95, 117, 119, 121, 123, 125, 135, 143, 145, 147, 155, 161, and the list goes on and on.
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Frequently asked questions about the number 51
How do you write the number 51 in words?
51 can be written as "fifty-one".
Number 51 in News
France24: Live: People screaming in streets as Mandalay hit by powerful 5.1 magnitude aftershock
A powerful 5.1-magnitude aftershock on Sunday rocked Myanmar’s second-largest city Mandalay, sending residents – many whom had spent the night outside for fear of more trembles – screaming in the streets. So far, more than 1,600 people have been confirmed dead in Friday’s quake, but thousands more are still missing. … March 30, 2025 |
France24: Nightclub fire in North Macedonia kills at least 51, injures more than 100
A massive nightclub fire has killed at least 51 people in North Macedonia’s eastern town of Kocani and injured about 100 more, Interior Minister Panche Toshkovski told a press conference on Sunday, adding that the blaze was probably caused by "pyrotechnic devices" used during a concert. March 16, 2025 |
NyTimes: What to Know About the France Rape Trial of 51 Men
Prosecutors say that, for almost a decade, Dominique Pelicot drugged his wife to rape her, alongside dozens of other men he invited to abuse her. Sept. 17, 2024 |
NyTimes: France Confronts Horror of Rape and Drugging Case as 51 Men Go on Trial
A man is accused of drugging his wife and then inviting dozens of men to rape her over almost a decade. The questions raised by the case have unsettled the country. Sept. 2, 2024 |
NyTimes: France Confronts Horror of Rape and Drugging Case as 51 Men Go on Trial
A man is accused of drugging his wife and then inviting dozens of men to rape her over almost a decade. The questions raised by the case have unsettled the country. Sept. 2, 2024 |