56931767 has 2 divisors, whose sum is σ = 56931768. Its totient is φ = 56931766.

The previous prime is 56931737. The next prime is 56931829. The reversal of 56931767 is 76713965.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56931767 - 2⁶ = 56931703 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56931737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28465883 + 28465884.

It is an arithmetic number, because the mean of its divisors is an integer number (28465884).

Almost surely, 2^56931767 is an apocalyptic number.

56931767 is a deficient number, since it is larger than the sum of its proper divisors (1).

56931767 is an equidigital number, since it uses as much as digits as its factorization.

56931767 is an evil number, because the sum of its binary digits is even.

The product of its digits is 238140, while the sum is 44.

The square root of 56931767 is about 7545.3142413023. The cubic root of 56931767 is about 384.6964876137.

The spelling of 56931767 in words is "fifty-six million, nine hundred thirty-one thousand, seven hundred sixty-seven".