57139044 has 24 divisors (see below), whose sum is σ = 134621760. Its totient is φ = 18861024.

The previous prime is 57139039. The next prime is 57139079. The reversal of 57139044 is 44093175.

It is a junction number, because it is equal to n+sod(n) for n = 57138996 and 57139014.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 21879 + ... + 24350.

It is an arithmetic number, because the mean of its divisors is an integer number (5609240).

Almost surely, 2^57139044 is an apocalyptic number.

It is an amenable number.

57139044 is an abundant number, since it is smaller than the sum of its proper divisors (77482716).

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

57139044 is a wasteful number, since it uses less digits than its factorization.

57139044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46339 (or 46337 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 57139044 is about 7559.0372402840. The cubic root of 57139044 is about 385.1627894254.

The spelling of 57139044 in words is "fifty-seven million, one hundred thirty-nine thousand, forty-four".