57256679 has 2 divisors, whose sum is σ = 57256680. Its totient is φ = 57256678.

The previous prime is 57256673. The next prime is 57256681. The reversal of 57256679 is 97665275.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57256679 is a prime.

It is a Sophie Germain prime.

Together with 57256681, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57256673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28628339 + 28628340.

It is an arithmetic number, because the mean of its divisors is an integer number (28628340).

Almost surely, 2^57256679 is an apocalyptic number.

57256679 is a deficient number, since it is larger than the sum of its proper divisors (1).

57256679 is an equidigital number, since it uses as much as digits as its factorization.

57256679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 793800, while the sum is 47.

The square root of 57256679 is about 7566.8143230821. The cubic root of 57256679 is about 385.4269261933.

The spelling of 57256679 in words is "fifty-seven million, two hundred fifty-six thousand, six hundred seventy-nine".