56907657 has 16 divisors (see below), whose sum is σ = 87216000. Its totient is φ = 36629712.

The previous prime is 56907649. The next prime is 56907659. The reversal of 56907657 is 75670965.

It is a happy number.

56907657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56907657 - 2³ = 56907649 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (56907659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35557 + ... + 37122.

It is an arithmetic number, because the mean of its divisors is an integer number (5451000).

Almost surely, 2^56907657 is an apocalyptic number.

It is an amenable number.

56907657 is a deficient number, since it is larger than the sum of its proper divisors (30308343).

56907657 is a wasteful number, since it uses less digits than its factorization.

56907657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72717 (or 72711 counting only the distinct ones).

The product of its (nonzero) digits is 396900, while the sum is 45.

The square root of 56907657 is about 7543.7163918058. The cubic root of 56907657 is about 384.6421749841.

The spelling of 56907657 in words is "fifty-six million, nine hundred seven thousand, six hundred fifty-seven".