56775831 has 8 divisors (see below), whose sum is σ = 86515584. Its totient is φ = 32443320.

The previous prime is 56775827. The next prime is 56775839. The reversal of 56775831 is 13857765.

56775831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56775831 - 2² = 56775827 is a prime.

It is a super-2 number, since 2×56775831² = 6446989971481122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56775839) 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 7 ways as a sum of consecutive naturals, for example, 1351785 + ... + 1351826.

It is an arithmetic number, because the mean of its divisors is an integer number (10814448).

Almost surely, 2^56775831 is an apocalyptic number.

56775831 is a deficient number, since it is larger than the sum of its proper divisors (29739753).

56775831 is a wasteful number, since it uses less digits than its factorization.

56775831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2703621.

The product of its digits is 176400, while the sum is 42.

The square root of 56775831 is about 7534.9738552964. The cubic root of 56775831 is about 384.3449388084.

The spelling of 56775831 in words is "fifty-six million, seven hundred seventy-five thousand, eight hundred thirty-one".