57685393 has 2 divisors, whose sum is σ = 57685394. Its totient is φ = 57685392.

The previous prime is 57685373. The next prime is 57685429. The reversal of 57685393 is 39358675.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56896849 + 788544 = 7543^2 + 888^2 .

It is a cyclic number.

It is not a de Polignac number, because 57685393 - 2⁵ = 57685361 is a prime.

It is not a weakly prime, because it can be changed into another prime (57685333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28842696 + 28842697.

It is an arithmetic number, because the mean of its divisors is an integer number (28842697).

Almost surely, 2^57685393 is an apocalyptic number.

It is an amenable number.

57685393 is a deficient number, since it is larger than the sum of its proper divisors (1).

57685393 is an equidigital number, since it uses as much as digits as its factorization.

57685393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 46.

The square root of 57685393 is about 7595.0900587156. The cubic root of 57685393 is about 386.3865069117.

The spelling of 57685393 in words is "fifty-seven million, six hundred eighty-five thousand, three hundred ninety-three".