57111638 has 8 divisors (see below), whose sum is σ = 86052288. Its totient is φ = 28427544.

The previous prime is 57111631. The next prime is 57111661. The reversal of 57111638 is 83611175.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57111631) 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, 63581 + ... + 64472.

It is an arithmetic number, because the mean of its divisors is an integer number (10756536).

Almost surely, 2^57111638 is an apocalyptic number.

57111638 is a deficient number, since it is larger than the sum of its proper divisors (28940650).

57111638 is a wasteful number, since it uses less digits than its factorization.

57111638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128278.

The product of its digits is 5040, while the sum is 32.

The square root of 57111638 is about 7557.2242258649. The cubic root of 57111638 is about 385.1012001351.

The spelling of 57111638 in words is "fifty-seven million, one hundred eleven thousand, six hundred thirty-eight".