57379221 has 24 divisors (see below), whose sum is σ = 87607520. Its totient is φ = 36088416.

The previous prime is 57379207. The next prime is 57379229. The reversal of 57379221 is 12297375.

It is not a de Polignac number, because 57379221 - 2⁹ = 57378709 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57379229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51951 + ... + 53043.

Almost surely, 2^57379221 is an apocalyptic number.

It is an amenable number.

57379221 is a deficient number, since it is larger than the sum of its proper divisors (30228299).

57379221 is a wasteful number, since it uses less digits than its factorization.

57379221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425 (or 1422 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 57379221 is about 7574.9073261658. The cubic root of 57379221 is about 385.7016966497.

It can be divided in two parts, 57379 and 221, that added together give a square (57600 = 240²).

The spelling of 57379221 in words is "fifty-seven million, three hundred seventy-nine thousand, two hundred twenty-one".