57223572 has 72 divisors (see below), whose sum is σ = 156318624. Its totient is φ = 16244928.

The previous prime is 57223549. The next prime is 57223589. The reversal of 57223572 is 27532275.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 180358 + ... + 180674.

It is an arithmetic number, because the mean of its divisors is an integer number (2171092).

Almost surely, 2^57223572 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57223572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78159312).

57223572 is an abundant number, since it is smaller than the sum of its proper divisors (99095052).

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

57223572 is a wasteful number, since it uses less digits than its factorization.

57223572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645 (or 636 counting only the distinct ones).

The product of its digits is 29400, while the sum is 33.

The square root of 57223572 is about 7564.6263622204. The cubic root of 57223572 is about 385.3526245881.

The spelling of 57223572 in words is "fifty-seven million, two hundred twenty-three thousand, five hundred seventy-two".