57122439 has 8 divisors (see below), whose sum is σ = 83087232. Its totient is φ = 34619640.

The previous prime is 57122383. The next prime is 57122453. The reversal of 57122439 is 93422175.

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

It is not a de Polignac number, because 57122439 - 2¹⁶ = 57056903 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 1730983 = 57122439 / (5 + 7 + 1 + 2 + 2 + 4 + 3 + 9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57122459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 865459 + ... + 865524.

It is an arithmetic number, because the mean of its divisors is an integer number (10385904).

Almost surely, 2^57122439 is an apocalyptic number.

57122439 is a deficient number, since it is larger than the sum of its proper divisors (25964793).

57122439 is a wasteful number, since it uses less digits than its factorization.

57122439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730997.

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

The square root of 57122439 is about 7557.9388063149. The cubic root of 57122439 is about 385.1254754902.

The spelling of 57122439 in words is "fifty-seven million, one hundred twenty-two thousand, four hundred thirty-nine".