The number 51

Representation numerals

Greek numeral

ναʹ

Arabic numeral

٥١

Roman numeral

LI

Maya numeral

●●

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Chinese numeral

五十一

Hebrew numeral

נא
Numeral systems
Binary: 110011
Septimal (base 7): 102
Octal: 63
Hexadecimal: 33
Base 24: 23
Factorization
51 = 3 × 17
51 has 4 divisors: 1, 3, 17, 51
Sum of all divisors other than 51: 21
Sums & differences
Difference of 2 squares: 51 = 102 - 72 = 262 - 252
Characteristics
51 is a pentagonal number
51 is a palindromic number in binary system (110011)
Related primes
The 51th prime number is: 233
Previous prime number: 47 — Next prime number: 53
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