51565075 has 12 divisors (see below), whose sum is σ = 64227040. Its totient is φ = 41067360.

The previous prime is 51565061. The next prime is 51565081. The reversal of 51565075 is 57056515.

51565075 is nontrivially palindromic in base 16.

It is not a de Polignac number, because 51565075 - 2⁵ = 51565043 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 51565075.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1222 + ... + 10228.

Almost surely, 2^51565075 is an apocalyptic number.

51565075 is a deficient number, since it is larger than the sum of its proper divisors (12661965).

51565075 is a wasteful number, since it uses less digits than its factorization.

51565075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9246 (or 9241 counting only the distinct ones).

The product of its (nonzero) digits is 26250, while the sum is 34.

The square root of 51565075 is about 7180.8826059197. The cubic root of 51565075 is about 372.2075839726.

The spelling of 51565075 in words is "fifty-one million, five hundred sixty-five thousand, seventy-five".