56756831 has 4 divisors (see below), whose sum is σ = 56797872. Its totient is φ = 56715792.

The previous prime is 56756827. The next prime is 56756867. The reversal of 56756831 is 13865765.

56756831 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, and also an emirpimes, since its reverse is a distinct semiprime: 13865765 = 5 ⋅2773153.

It is a cyclic number.

It is not a de Polignac number, because 56756831 - 2² = 56756827 is a prime.

It is a super-2 number, since 2×56756831² = 6442675730325122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56756891) 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, 18371 + ... + 21236.

It is an arithmetic number, because the mean of its divisors is an integer number (14199468).

Almost surely, 2^56756831 is an apocalyptic number.

56756831 is a deficient number, since it is larger than the sum of its proper divisors (41041).

56756831 is a wasteful number, since it uses less digits than its factorization.

56756831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41040.

The product of its digits is 151200, while the sum is 41.

The square root of 56756831 is about 7533.7129624110. The cubic root of 56756831 is about 384.3020604189.

The spelling of 56756831 in words is "fifty-six million, seven hundred fifty-six thousand, eight hundred thirty-one".