56917457 has 4 divisors (see below), whose sum is σ = 58753536. Its totient is φ = 55081380.

The previous prime is 56917409. The next prime is 56917501. The reversal of 56917457 is 75471965.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56917457 - 2²⁰ = 55868881 is a prime.

It is a super-2 number, since 2×56917457² = 6479193822693698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56917057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 917993 + ... + 918054.

It is an arithmetic number, because the mean of its divisors is an integer number (14688384).

Almost surely, 2^56917457 is an apocalyptic number.

It is an amenable number.

56917457 is a deficient number, since it is larger than the sum of its proper divisors (1836079).

56917457 is a wasteful number, since it uses less digits than its factorization.

56917457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836078.

The product of its digits is 264600, while the sum is 44.

The square root of 56917457 is about 7544.3659110624. The cubic root of 56917457 is about 384.6642533075.

The spelling of 56917457 in words is "fifty-six million, nine hundred seventeen thousand, four hundred fifty-seven".