51331075 has 12 divisors (see below), whose sum is σ = 67395240. Its totient is φ = 38648960.

The previous prime is 51331069. The next prime is 51331081. The reversal of 51331075 is 57013315.

It is an interprime number because it is at equal distance from previous prime (51331069) and next prime (51331081).

It is not a de Polignac number, because 51331075 - 2¹³ = 51322883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59965 + ... + 60814.

It is an arithmetic number, because the mean of its divisors is an integer number (5616270).

Almost surely, 2^51331075 is an apocalyptic number.

51331075 is a deficient number, since it is larger than the sum of its proper divisors (16064165).

51331075 is a wasteful number, since it uses less digits than its factorization.

51331075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120806 (or 120801 counting only the distinct ones).

The product of its (nonzero) digits is 1575, while the sum is 25.

The square root of 51331075 is about 7164.5708175717. The cubic root of 51331075 is about 371.6437097186.

The spelling of 51331075 in words is "fifty-one million, three hundred thirty-one thousand, seventy-five".