57145444 has 12 divisors (see below), whose sum is σ = 100059568. Its totient is φ = 28557000.

The previous prime is 57145423. The next prime is 57145447. The reversal of 57145444 is 44454175.

It is not an unprimeable number, because it can be changed into a prime (57145447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8899 + ... + 13909.

Almost surely, 2^57145444 is an apocalyptic number.

It is an amenable number.

57145444 is a deficient number, since it is larger than the sum of its proper divisors (42914124).

57145444 is a wasteful number, since it uses less digits than its factorization.

57145444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7866 (or 7864 counting only the distinct ones).

The product of its digits is 44800, while the sum is 34.

The square root of 57145444 is about 7559.4605627650. The cubic root of 57145444 is about 385.1771692589.

The spelling of 57145444 in words is "fifty-seven million, one hundred forty-five thousand, four hundred forty-four".