57099239 has 8 divisors (see below), whose sum is σ = 58186512. Its totient is φ = 56022400.

The previous prime is 57099223. The next prime is 57099257. The reversal of 57099239 is 93299075.

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

It is a cyclic number.

It is not a de Polignac number, because 57099239 - 2⁴ = 57099223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57099239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57099299) 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, 8912 + ... + 13914.

It is an arithmetic number, because the mean of its divisors is an integer number (7273314).

Almost surely, 2^57099239 is an apocalyptic number.

57099239 is a deficient number, since it is larger than the sum of its proper divisors (1087273).

57099239 is a wasteful number, since it uses less digits than its factorization.

57099239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5217.

The product of its (nonzero) digits is 153090, while the sum is 44.

The square root of 57099239 is about 7556.4038404521. The cubic root of 57099239 is about 385.0733294854.

The spelling of 57099239 in words is "fifty-seven million, ninety-nine thousand, two hundred thirty-nine".