56857597 has 2 divisors, whose sum is σ = 56857598. Its totient is φ = 56857596.

The previous prime is 56857579. The next prime is 56857609. The reversal of 56857597 is 79575865.

Together with previous prime (56857579) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29095236 + 27762361 = 5394^2 + 5269^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56857597 is a prime.

It is a super-2 number, since 2×56857597² = 6465572673228818, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56857897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28428798 + 28428799.

It is an arithmetic number, because the mean of its divisors is an integer number (28428799).

Almost surely, 2^56857597 is an apocalyptic number.

It is an amenable number.

56857597 is a deficient number, since it is larger than the sum of its proper divisors (1).

56857597 is an equidigital number, since it uses as much as digits as its factorization.

56857597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2646000, while the sum is 52.

The square root of 56857597 is about 7540.3976685583. The cubic root of 56857597 is about 384.5293557425.

The spelling of 56857597 in words is "fifty-six million, eight hundred fifty-seven thousand, five hundred ninety-seven".