57506238 has 48 divisors (see below), whose sum is σ = 127848240. Its totient is φ = 18675072.

The previous prime is 57506227. The next prime is 57506243. The reversal of 57506238 is 83260575.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 183570 + ... + 183882.

It is an arithmetic number, because the mean of its divisors is an integer number (2663505).

Almost surely, 2^57506238 is an apocalyptic number.

57506238 is an abundant number, since it is smaller than the sum of its proper divisors (70342002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57506238 is a wasteful number, since it uses less digits than its factorization.

57506238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553 (or 550 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 57506238 is about 7583.2867544357. The cubic root of 57506238 is about 385.9860886107.

The spelling of 57506238 in words is "fifty-seven million, five hundred six thousand, two hundred thirty-eight".