57381212 has 48 divisors (see below), whose sum is σ = 118352640. Its totient is φ = 23836032.

The previous prime is 57381199. The next prime is 57381229. The reversal of 57381212 is 21218375.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136739 + ... + 137157.

It is an arithmetic number, because the mean of its divisors is an integer number (2465680).

Almost surely, 2^57381212 is an apocalyptic number.

It is an amenable number.

57381212 is an abundant number, since it is smaller than the sum of its proper divisors (60971428).

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

57381212 is a wasteful number, since it uses less digits than its factorization.

57381212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570 (or 568 counting only the distinct ones).

The product of its digits is 3360, while the sum is 29.

The square root of 57381212 is about 7575.0387457755. The cubic root of 57381212 is about 385.7061577489.

Adding to 57381212 its reverse (21218375), we get a palindrome (78599587).

The spelling of 57381212 in words is "fifty-seven million, three hundred eighty-one thousand, two hundred twelve".