57325813 has 4 divisors (see below), whose sum is σ = 57710700. Its totient is φ = 56940928.

The previous prime is 57325771. The next prime is 57325817. The reversal of 57325813 is 31852375.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19158129 + 38167684 = 4377^2 + 6178^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57325813 is a prime.

It is a super-2 number, since 2×57325813² = 6572497672221938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57325817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192220 + ... + 192517.

It is an arithmetic number, because the mean of its divisors is an integer number (14427675).

Almost surely, 2^57325813 is an apocalyptic number.

It is an amenable number.

57325813 is a deficient number, since it is larger than the sum of its proper divisors (384887).

57325813 is a wasteful number, since it uses less digits than its factorization.

57325813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384886.

The product of its digits is 25200, while the sum is 34.

The square root of 57325813 is about 7571.3811817924. The cubic root of 57325813 is about 385.5819904189.

The spelling of 57325813 in words is "fifty-seven million, three hundred twenty-five thousand, eight hundred thirteen".