57539239 has 8 divisors (see below), whose sum is σ = 60733440. Its totient is φ = 54361656.

The previous prime is 57539231. The next prime is 57539243. The reversal of 57539239 is 93293575.

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 57539239 - 2³ = 57539231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57539195 and 57539204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57539231) 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, 3324 + ... + 11230.

It is an arithmetic number, because the mean of its divisors is an integer number (7591680).

Almost surely, 2^57539239 is an apocalyptic number.

57539239 is a deficient number, since it is larger than the sum of its proper divisors (3194201).

57539239 is a wasteful number, since it uses less digits than its factorization.

57539239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8309.

The product of its digits is 255150, while the sum is 43.

The square root of 57539239 is about 7585.4623458297. The cubic root of 57539239 is about 386.0599095357.

The spelling of 57539239 in words is "fifty-seven million, five hundred thirty-nine thousand, two hundred thirty-nine".