57109990 has 48 divisors (see below), whose sum is σ = 123735600. Its totient is φ = 18900672.

The previous prime is 57109979. The next prime is 57109999. The reversal of 57109990 is 9990175.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57109999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12201 + ... + 16219.

It is an arithmetic number, because the mean of its divisors is an integer number (2577825).

Almost surely, 2^57109990 is an apocalyptic number.

57109990 is an abundant number, since it is smaller than the sum of its proper divisors (66625610).

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

57109990 is a wasteful number, since it uses less digits than its factorization.

57109990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4069 (or 4062 counting only the distinct ones).

The product of its (nonzero) digits is 25515, while the sum is 40.

The square root of 57109990 is about 7557.1151903355. The cubic root of 57109990 is about 385.0974959696.

The spelling of 57109990 in words is "fifty-seven million, one hundred nine thousand, nine hundred ninety".