57507238 has 4 divisors (see below), whose sum is σ = 86260860. Its totient is φ = 28753618.

The previous prime is 57507227. The next prime is 57507253. The reversal of 57507238 is 83270575.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 57507197 and 57507206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14376808 + ... + 14376811.

It is an arithmetic number, because the mean of its divisors is an integer number (21565215).

Almost surely, 2^57507238 is an apocalyptic number.

57507238 is a deficient number, since it is larger than the sum of its proper divisors (28753622).

57507238 is a wasteful number, since it uses less digits than its factorization.

57507238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28753621.

The product of its (nonzero) digits is 58800, while the sum is 37.

The square root of 57507238 is about 7583.3526886200. The cubic root of 57507238 is about 385.9883259555.

The spelling of 57507238 in words is "fifty-seven million, five hundred seven thousand, two hundred thirty-eight".