56570657 has 32 divisors (see below), whose sum is σ = 71608320. Its totient is φ = 43917120.

The previous prime is 56570641. The next prime is 56570687. The reversal of 56570657 is 75607565.

It is not a de Polignac number, because 56570657 - 2⁴ = 56570641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56570627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127478 + ... + 127920.

It is an arithmetic number, because the mean of its divisors is an integer number (2237760).

Almost surely, 2^56570657 is an apocalyptic number.

It is an amenable number.

56570657 is a deficient number, since it is larger than the sum of its proper divisors (15037663).

56570657 is a wasteful number, since it uses less digits than its factorization.

56570657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533.

The product of its (nonzero) digits is 220500, while the sum is 41.

The square root of 56570657 is about 7521.3467544051. The cubic root of 56570657 is about 383.8814037152.

The spelling of 56570657 in words is "fifty-six million, five hundred seventy thousand, six hundred fifty-seven".