57385613 has 2 divisors, whose sum is σ = 57385614. Its totient is φ = 57385612.

The previous prime is 57385579. The next prime is 57385639. The reversal of 57385613 is 31658375.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47513449 + 9872164 = 6893^2 + 3142^2 .

It is a cyclic number.

It is not a de Polignac number, because 57385613 - 2¹⁰ = 57384589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57385663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28692806 + 28692807.

It is an arithmetic number, because the mean of its divisors is an integer number (28692807).

Almost surely, 2^57385613 is an apocalyptic number.

It is an amenable number.

57385613 is a deficient number, since it is larger than the sum of its proper divisors (1).

57385613 is an equidigital number, since it uses as much as digits as its factorization.

57385613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 38.

The square root of 57385613 is about 7575.3292337693. The cubic root of 57385613 is about 385.7160184062.

The spelling of 57385613 in words is "fifty-seven million, three hundred eighty-five thousand, six hundred thirteen".