57493538 has 4 divisors (see below), whose sum is σ = 86240310. Its totient is φ = 28746768.

The previous prime is 57493493. The next prime is 57493577. The reversal of 57493538 is 83539475.

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

It can be written as a sum of positive squares in only one way, i.e., 56355049 + 1138489 = 7507^2 + 1067^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14373383 + ... + 14373386.

Almost surely, 2^57493538 is an apocalyptic number.

57493538 is a deficient number, since it is larger than the sum of its proper divisors (28746772).

57493538 is a wasteful number, since it uses less digits than its factorization.

57493538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28746771.

The product of its digits is 453600, while the sum is 44.

The square root of 57493538 is about 7582.4493404176. The cubic root of 57493538 is about 385.9576720747.

The spelling of 57493538 in words is "fifty-seven million, four hundred ninety-three thousand, five hundred thirty-eight".