56955791 has 2 divisors, whose sum is σ = 56955792. Its totient is φ = 56955790.

The previous prime is 56955757. The next prime is 56955809. The reversal of 56955791 is 19755965.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56955791 - 2⁶ = 56955727 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 (56955721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28477895 + 28477896.

It is an arithmetic number, because the mean of its divisors is an integer number (28477896).

Almost surely, 2^56955791 is an apocalyptic number.

56955791 is a deficient number, since it is larger than the sum of its proper divisors (1).

56955791 is an equidigital number, since it uses as much as digits as its factorization.

56955791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 425250, while the sum is 47.

The square root of 56955791 is about 7546.9060548015. The cubic root of 56955791 is about 384.7505912612.

The spelling of 56955791 in words is "fifty-six million, nine hundred fifty-five thousand, seven hundred ninety-one".