57655693 has 2 divisors, whose sum is σ = 57655694. Its totient is φ = 57655692.

The previous prime is 57655669. The next prime is 57655723. The reversal of 57655693 is 39655675.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55086084 + 2569609 = 7422^2 + 1603^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57655693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57655603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28827846 + 28827847.

It is an arithmetic number, because the mean of its divisors is an integer number (28827847).

Almost surely, 2^57655693 is an apocalyptic number.

It is an amenable number.

57655693 is a deficient number, since it is larger than the sum of its proper divisors (1).

57655693 is an equidigital number, since it uses as much as digits as its factorization.

57655693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 850500, while the sum is 46.

The square root of 57655693 is about 7593.1345964628. The cubic root of 57655693 is about 386.3201836555.

The spelling of 57655693 in words is "fifty-seven million, six hundred fifty-five thousand, six hundred ninety-three".