51 (number)

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50 51 52
Cardinalfifty-one
Ordinal51st
(fifty-first)
Factorization3 · 17
Divisors1, 3, 17, 51
Roman numeralLI
Binary1100112
Ternary12203
Quaternary3034
Quinary2015
Senary1236
Octal638
Duodecimal4312
Hexadecimal3316
Vigesimal2B20
Base 361F36

Fifty-one is a number. It comes between fifty and fifty-two, and is an odd number. It is divisible by 1, 3, 17, and 51.