56785931 has 4 divisors (see below), whose sum is σ = 56986872. Its totient is φ = 56584992.

The previous prime is 56785921. The next prime is 56785951. The reversal of 56785931 is 13958765.

56785931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56785931 - 2⁶ = 56785867 is a prime.

It is a super-2 number, since 2×56785931² = 6449283919073522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56785921) 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 3 ways as a sum of consecutive naturals, for example, 100046 + ... + 100611.

It is an arithmetic number, because the mean of its divisors is an integer number (14246718).

Almost surely, 2^56785931 is an apocalyptic number.

56785931 is a deficient number, since it is larger than the sum of its proper divisors (200941).

56785931 is a wasteful number, since it uses less digits than its factorization.

56785931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200940.

The product of its digits is 226800, while the sum is 44.

The square root of 56785931 is about 7535.6440335249. The cubic root of 56785931 is about 384.3677281635.

The spelling of 56785931 in words is "fifty-six million, seven hundred eighty-five thousand, nine hundred thirty-one".