57381492 has 48 divisors (see below), whose sum is σ = 154972160. Its totient is φ = 16185312.

The previous prime is 57381461. The next prime is 57381559. The reversal of 57381492 is 29418375.

It is a self number, because there is not a number n which added to its sum of digits gives 57381492.

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, 2313 + ... + 10959.

Almost surely, 2^57381492 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 57381492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77486080).

57381492 is an abundant number, since it is smaller than the sum of its proper divisors (97590668).

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

57381492 is a wasteful number, since it uses less digits than its factorization.

57381492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8740 (or 8738 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 57381492 is about 7575.0572275066. The cubic root of 57381492 is about 385.7067851177.

The spelling of 57381492 in words is "fifty-seven million, three hundred eighty-one thousand, four hundred ninety-two".