57115389 has 8 divisors (see below), whose sum is σ = 76199680. Its totient is φ = 38054016.

The previous prime is 57115367. The next prime is 57115391. The reversal of 57115389 is 98351175.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57115389 - 2⁹ = 57114877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57115319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1332 + ... + 10770.

It is an arithmetic number, because the mean of its divisors is an integer number (9524960).

Almost surely, 2^57115389 is an apocalyptic number.

It is an amenable number.

57115389 is a deficient number, since it is larger than the sum of its proper divisors (19084291).

57115389 is a wasteful number, since it uses less digits than its factorization.

57115389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11459.

The product of its digits is 37800, while the sum is 39.

The square root of 57115389 is about 7557.4723949215. The cubic root of 57115389 is about 385.1096308918.

The spelling of 57115389 in words is "fifty-seven million, one hundred fifteen thousand, three hundred eighty-nine".