57421824 has 52 divisors (see below), whose sum is σ = 153138936. Its totient is φ = 19136512.

The previous prime is 57421811. The next prime is 57421841. The reversal of 57421824 is 42812475.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9952 + ... + 14624.

Almost surely, 2^57421824 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 57421824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76569468).

57421824 is an abundant number, since it is smaller than the sum of its proper divisors (95717112).

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

57421824 is an equidigital number, since it uses as much as digits as its factorization.

57421824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4700 (or 4678 counting only the distinct ones).

The product of its digits is 17920, while the sum is 33.

The square root of 57421824 is about 7577.7189179858. The cubic root of 57421824 is about 385.7971318028.

The spelling of 57421824 in words is "fifty-seven million, four hundred twenty-one thousand, eight hundred twenty-four".