Factors of 51

The factors of 51 are 1, 3, 17 and 51. That is 4 factors in total.

A factor of 51 is a whole number that divides 51 exactly, with no remainder. 51 is a composite number because it has factors other than 1 and itself.

Factor pairs of 51

Two numbers that multiply to give 51:

1 × 51 = 51
3 × 17 = 51

Prime factorization of 51

51 = 3 × 17. The prime factors of 51 are 3 and 17.

Quick facts about 51

Is 51 prime? No.
Even or odd: odd.
Sum of its factors: 1 + 3 + 17 + 51 = 72.

Factors of nearby numbers

Number	Factors
47	1, 47
48	1, 2, 3, 4, 6, 8, 12, 16, 24, 48
49	1, 7, 49
50	1, 2, 5, 10, 25, 50
52	1, 2, 4, 13, 26, 52
53	1, 53
54	1, 2, 3, 6, 9, 18, 27, 54
55	1, 5, 11, 55

More about 51: 51 squared · square root of 51 · 51 in binary · 51 in Roman numerals.

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