57513140 has 24 divisors (see below), whose sum is σ = 121954560. Its totient is φ = 22781088.

The previous prime is 57513139. The next prime is 57513149. The reversal of 57513140 is 4131575.

It is a super-2 number, since 2×57513140² = 6615522545319200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57513149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11900 + ... + 16019.

It is an arithmetic number, because the mean of its divisors is an integer number (5081440).

Almost surely, 2^57513140 is an apocalyptic number.

It is an amenable number.

57513140 is an abundant number, since it is smaller than the sum of its proper divisors (64441420).

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

57513140 is a wasteful number, since it uses less digits than its factorization.

57513140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28031 (or 28029 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 57513140 is about 7583.7418205000. The cubic root of 57513140 is about 386.0015302364.

The spelling of 57513140 in words is "fifty-seven million, five hundred thirteen thousand, one hundred forty".