57212226 has 48 divisors (see below), whose sum is σ = 127370880. Its totient is φ = 18553920.

The previous prime is 57212209. The next prime is 57212227. The reversal of 57212226 is 62221275.

It is a self number, because there is not a number n which added to its sum of digits gives 57212226.

It is not an unprimeable number, because it can be changed into a prime (57212227) 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, 113491 + ... + 113993.

It is an arithmetic number, because the mean of its divisors is an integer number (2653560).

Almost surely, 2^57212226 is an apocalyptic number.

57212226 is an abundant number, since it is smaller than the sum of its proper divisors (70158654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57212226 is a wasteful number, since it uses less digits than its factorization.

57212226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671 (or 668 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 57212226 is about 7563.8763871444. The cubic root of 57212226 is about 385.3271543158.

The spelling of 57212226 in words is "fifty-seven million, two hundred twelve thousand, two hundred twenty-six".