57655597 has 2 divisors, whose sum is σ = 57655598. Its totient is φ = 57655596.

The previous prime is 57655579. The next prime is 57655603. The reversal of 57655597 is 79555675.

Together with previous prime (57655579) 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., 54375876 + 3279721 = 7374^2 + 1811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57655597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57655597.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57655397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28827798 + 28827799.

It is an arithmetic number, because the mean of its divisors is an integer number (28827799).

Almost surely, 2^57655597 is an apocalyptic number.

It is an amenable number.

57655597 is a deficient number, since it is larger than the sum of its proper divisors (1).

57655597 is an equidigital number, since it uses as much as digits as its factorization.

57655597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1653750, while the sum is 49.

The square root of 57655597 is about 7593.1282749602. The cubic root of 57655597 is about 386.3199692404.

The spelling of 57655597 in words is "fifty-seven million, six hundred fifty-five thousand, five hundred ninety-seven".