57499940 has 24 divisors (see below), whose sum is σ = 121188480. Its totient is φ = 22916448.

The previous prime is 57499927. The next prime is 57499943. The reversal of 57499940 is 4999475.

It is not an unprimeable number, because it can be changed into a prime (57499943) 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, 581 + ... + 10739.

It is an arithmetic number, because the mean of its divisors is an integer number (5049520).

Almost surely, 2^57499940 is an apocalyptic number.

It is an amenable number.

57499940 is an abundant number, since it is smaller than the sum of its proper divisors (63688540).

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

57499940 is a wasteful number, since it uses less digits than its factorization.

57499940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10451 (or 10449 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 57499940 is about 7582.8714877677. The cubic root of 57499940 is about 385.9719972169.

The spelling of 57499940 in words is "fifty-seven million, four hundred ninety-nine thousand, nine hundred forty".