56057931 has 6 divisors (see below), whose sum is σ = 80972580. Its totient is φ = 37371948.

The previous prime is 56057921. The next prime is 56057971. The reversal of 56057931 is 13975065.

It is a happy number.

56057931 is a `hidden beast` number, since 56 + 0 + 579 + 31 = 666.

56057931 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 56057931 - 2⁶ = 56057867 is a prime.

It is a super-2 number, since 2×56057931² = 6284983256001522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56057921) 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 5 ways as a sum of consecutive naturals, for example, 3114321 + ... + 3114338.

It is an arithmetic number, because the mean of its divisors is an integer number (13495430).

Almost surely, 2^56057931 is an apocalyptic number.

56057931 is a deficient number, since it is larger than the sum of its proper divisors (24914649).

56057931 is a wasteful number, since it uses less digits than its factorization.

56057931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6228665 (or 6228662 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 36.

The square root of 56057931 is about 7487.1844507799. The cubic root of 56057931 is about 382.7181172988.

The spelling of 56057931 in words is "fifty-six million, fifty-seven thousand, nine hundred thirty-one".