57516439 has 8 divisors (see below), whose sum is σ = 62497280. Its totient is φ = 52731000.

The previous prime is 57516419. The next prime is 57516449. The reversal of 57516439 is 93461575.

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

It is not a de Polignac number, because 57516439 - 2¹⁹ = 56992151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57516419) 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, 48237 + ... + 49414.

It is an arithmetic number, because the mean of its divisors is an integer number (7812160).

Almost surely, 2^57516439 is an apocalyptic number.

57516439 is a deficient number, since it is larger than the sum of its proper divisors (4980841).

57516439 is a wasteful number, since it uses less digits than its factorization.

57516439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97701.

The product of its digits is 113400, while the sum is 40.

The square root of 57516439 is about 7583.9593221483. The cubic root of 57516439 is about 386.0089105481.

The spelling of 57516439 in words is "fifty-seven million, five hundred sixteen thousand, four hundred thirty-nine".