57139377 has 4 divisors (see below), whose sum is σ = 76185840. Its totient is φ = 38092916.

The previous prime is 57139373. The next prime is 57139421. The reversal of 57139377 is 77393175.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57139377 - 2² = 57139373 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57139373) 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, 9523227 + ... + 9523232.

It is an arithmetic number, because the mean of its divisors is an integer number (19046460).

Almost surely, 2^57139377 is an apocalyptic number.

It is an amenable number.

57139377 is a deficient number, since it is larger than the sum of its proper divisors (19046463).

57139377 is a wasteful number, since it uses less digits than its factorization.

57139377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19046462.

The product of its digits is 138915, while the sum is 42.

The square root of 57139377 is about 7559.0592668665. The cubic root of 57139377 is about 385.1635376526.

The spelling of 57139377 in words is "fifty-seven million, one hundred thirty-nine thousand, three hundred seventy-seven".