57442636 has 12 divisors (see below), whose sum is σ = 102228840. Its totient is φ = 28234400.

The previous prime is 57442613. The next prime is 57442657. The reversal of 57442636 is 63624475.

It is a junction number, because it is equal to n+sod(n) for n = 57442595 and 57442604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121465 + ... + 121936.

It is an arithmetic number, because the mean of its divisors is an integer number (8519070).

Almost surely, 2^57442636 is an apocalyptic number.

It is an amenable number.

57442636 is a deficient number, since it is larger than the sum of its proper divisors (44786204).

57442636 is a wasteful number, since it uses less digits than its factorization.

57442636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243464 (or 243462 counting only the distinct ones).

The product of its digits is 120960, while the sum is 37.

The square root of 57442636 is about 7579.0920300521. The cubic root of 57442636 is about 385.8437356868.

The spelling of 57442636 in words is "fifty-seven million, four hundred forty-two thousand, six hundred thirty-six".