57855239 has 8 divisors (see below), whose sum is σ = 62398560. Its totient is φ = 53325216.

The previous prime is 57855227. The next prime is 57855241. The reversal of 57855239 is 93255875.

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 57855239 - 2¹⁶ = 57789703 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 57855239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57855299) 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, 6902 + ... + 12780.

It is an arithmetic number, because the mean of its divisors is an integer number (7799820).

Almost surely, 2^57855239 is an apocalyptic number.

57855239 is a deficient number, since it is larger than the sum of its proper divisors (4543321).

57855239 is a wasteful number, since it uses less digits than its factorization.

57855239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6649.

The product of its digits is 378000, while the sum is 44.

The square root of 57855239 is about 7606.2631429632. The cubic root of 57855239 is about 386.7653544012.

The spelling of 57855239 in words is "fifty-seven million, eight hundred fifty-five thousand, two hundred thirty-nine".