51 (number)

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50 51 52
Cardinal fifty-one
Ordinal 51st
(fifty-first)
Factorization 3 · 17
Divisors 1, 3, 17, 51
Roman numeral LI
Binary 1100112
Ternary 12203
Quaternary 3034
Quinary 2015
Senary 1236
Octal 638
Duodecimal 4312
Hexadecimal 3316
Vigesimal 2B20
Base 36 1F36

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.