57275865 has 24 divisors (see below), whose sum is σ = 103596480. Its totient is φ = 29218464.

The previous prime is 57275863. The next prime is 57275917. The reversal of 57275865 is 56857275.

57275865 is a `hidden beast` number, since 572 + 75 + 8 + 6 + 5 = 666.

It is not a de Polignac number, because 57275865 - 2¹ = 57275863 is a prime.

It is a super-2 number, since 2×57275865² = 6561049422996450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 57275865.

It is not an unprimeable number, because it can be changed into a prime (57275863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26635 + ... + 28704.

It is an arithmetic number, because the mean of its divisors is an integer number (4316520).

Almost surely, 2^57275865 is an apocalyptic number.

It is an amenable number.

57275865 is a deficient number, since it is larger than the sum of its proper divisors (46320615).

57275865 is a wasteful number, since it uses less digits than its factorization.

57275865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55373 (or 55370 counting only the distinct ones).

The product of its digits is 588000, while the sum is 45.

The square root of 57275865 is about 7568.0819895136. The cubic root of 57275865 is about 385.4699719731.

The spelling of 57275865 in words is "fifty-seven million, two hundred seventy-five thousand, eight hundred sixty-five".