57381900 has 72 divisors (see below), whose sum is σ = 174780480. Its totient is φ = 14495040.

The previous prime is 57381893. The next prime is 57381911. The reversal of 57381900 is 918375.

It is a super-2 number, since 2×57381900² = 6585364895220000, which contains 22 as substring.

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, 667 + ... + 10733.

Almost surely, 2^57381900 is an apocalyptic number.

57381900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57381900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87390240).

57381900 is an abundant number, since it is smaller than the sum of its proper divisors (117398580).

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

57381900 is a wasteful number, since it uses less digits than its factorization.

57381900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10103 (or 10096 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 57381900 is about 7575.0841579483. The cubic root of 57381900 is about 385.7076992800.

The spelling of 57381900 in words is "fifty-seven million, three hundred eighty-one thousand, nine hundred".