57199644 has 18 divisors (see below), whose sum is σ = 144588080. Its totient is φ = 19066536.

The previous prime is 57199627. The next prime is 57199673. The reversal of 57199644 is 44699175.

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 57199644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 794404 + ... + 794475.

Almost surely, 2^57199644 is an apocalyptic number.

It is an amenable number.

57199644 is an abundant number, since it is smaller than the sum of its proper divisors (87388436).

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

57199644 is a wasteful number, since it uses less digits than its factorization.

57199644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588889 (or 1588884 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 57199644 is about 7563.0446250171. The cubic root of 57199644 is about 385.2989054488.

The spelling of 57199644 in words is "fifty-seven million, one hundred ninety-nine thousand, six hundred forty-four".