56838931 has 2 divisors, whose sum is σ = 56838932. Its totient is φ = 56838930.

The previous prime is 56838923. The next prime is 56838953. The reversal of 56838931 is 13983865.

56838931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56838931 - 2³ = 56838923 is a prime.

It is a super-2 number, since 2×56838931² = 6461328154445522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56838961) 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 as a sum of consecutive naturals, namely, 28419465 + 28419466.

It is an arithmetic number, because the mean of its divisors is an integer number (28419466).

Almost surely, 2^56838931 is an apocalyptic number.

56838931 is a deficient number, since it is larger than the sum of its proper divisors (1).

56838931 is an equidigital number, since it uses as much as digits as its factorization.

56838931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 43.

The square root of 56838931 is about 7539.1598338276. The cubic root of 56838931 is about 384.4872715947.

The spelling of 56838931 in words is "fifty-six million, eight hundred thirty-eight thousand, nine hundred thirty-one".