57439291 has 16 divisors (see below), whose sum is σ = 70942144. Its totient is φ = 45287424.

The previous prime is 57439279. The next prime is 57439297. The reversal of 57439291 is 19293475.

It is not a de Polignac number, because 57439291 - 2⁵ = 57439259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57439297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29731 + ... + 31603.

It is an arithmetic number, because the mean of its divisors is an integer number (4433884).

Almost surely, 2^57439291 is an apocalyptic number.

57439291 is a deficient number, since it is larger than the sum of its proper divisors (13502853).

57439291 is a wasteful number, since it uses less digits than its factorization.

57439291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230.

The product of its digits is 68040, while the sum is 40.

The square root of 57439291 is about 7578.8713539682. The cubic root of 57439291 is about 385.8362460563.

The spelling of 57439291 in words is "fifty-seven million, four hundred thirty-nine thousand, two hundred ninety-one".