56757157 has 2 divisors, whose sum is σ = 56757158. Its totient is φ = 56757156.

The previous prime is 56757137. The next prime is 56757163. The reversal of 56757157 is 75175765.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37344321 + 19412836 = 6111^2 + 4406^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56757157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56757137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28378578 + 28378579.

It is an arithmetic number, because the mean of its divisors is an integer number (28378579).

Almost surely, 2^56757157 is an apocalyptic number.

It is an amenable number.

56757157 is a deficient number, since it is larger than the sum of its proper divisors (1).

56757157 is an equidigital number, since it uses as much as digits as its factorization.

56757157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 257250, while the sum is 43.

The square root of 56757157 is about 7533.7345984578. The cubic root of 56757157 is about 384.3027962025.

The spelling of 56757157 in words is "fifty-six million, seven hundred fifty-seven thousand, one hundred fifty-seven".