57109992 has 32 divisors (see below), whose sum is σ = 143640000. Its totient is φ = 18921344.

The previous prime is 57109979. The next prime is 57109999. The reversal of 57109992 is 29990175.

It is not an unprimeable number, because it can be changed into a prime (57109999) 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, 3117 + ... + 11132.

It is an arithmetic number, because the mean of its divisors is an integer number (4488750).

Almost surely, 2^57109992 is an apocalyptic number.

It is an amenable number.

57109992 is an abundant number, since it is smaller than the sum of its proper divisors (86530008).

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

57109992 is a wasteful number, since it uses less digits than its factorization.

57109992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14425 (or 14421 counting only the distinct ones).

The product of its (nonzero) digits is 51030, while the sum is 42.

The square root of 57109992 is about 7557.1153226612. The cubic root of 57109992 is about 385.0975004649.

The spelling of 57109992 in words is "fifty-seven million, one hundred nine thousand, nine hundred ninety-two".