57090879 has 32 divisors (see below), whose sum is σ = 92664000. Its totient is φ = 34578432.

The previous prime is 57090857. The next prime is 57090881. The reversal of 57090879 is 97809075.

57090879 is a `hidden beast` number, since 570 + 9 + 0 + 8 + 79 = 666.

It is not a de Polignac number, because 57090879 - 2¹⁶ = 57025343 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57090179) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11167 + ... + 15455.

It is an arithmetic number, because the mean of its divisors is an integer number (2895750).

Almost surely, 2^57090879 is an apocalyptic number.

57090879 is a deficient number, since it is larger than the sum of its proper divisors (35573121).

57090879 is a wasteful number, since it uses less digits than its factorization.

57090879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4344 (or 4338 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The square root of 57090879 is about 7555.8506470152. The cubic root of 57090879 is about 385.0545354804.

The spelling of 57090879 in words is "fifty-seven million, ninety thousand, eight hundred seventy-nine".