57120039 has 16 divisors (see below), whose sum is σ = 86592000. Its totient is φ = 37193688.

The previous prime is 57119987. The next prime is 57120043. The reversal of 57120039 is 93002175.

It is not a de Polignac number, because 57120039 - 2⁷ = 57119911 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 57119994 and 57120021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57120439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23439 + ... + 25760.

It is an arithmetic number, because the mean of its divisors is an integer number (5412000).

Almost surely, 2^57120039 is an apocalyptic number.

57120039 is a deficient number, since it is larger than the sum of its proper divisors (29471961).

57120039 is a wasteful number, since it uses less digits than its factorization.

57120039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49251 (or 49245 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 57120039 is about 7557.7800311996. The cubic root of 57120039 is about 385.1200817307.

The spelling of 57120039 in words is "fifty-seven million, one hundred twenty thousand, thirty-nine".