57556338 has 16 divisors (see below), whose sum is σ = 131557440. Its totient is φ = 16444656.

The previous prime is 57556337. The next prime is 57556351. The reversal of 57556338 is 83365575.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1370389 = 57556338 / (5 + 7 + 5 + 5 + 6 + 3 + 3 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 57556338.

It is not an unprimeable number, because it can be changed into a prime (57556337) 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, 685153 + ... + 685236.

It is an arithmetic number, because the mean of its divisors is an integer number (8222340).

Almost surely, 2^57556338 is an apocalyptic number.

57556338 is an abundant number, since it is smaller than the sum of its proper divisors (74001102).

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

57556338 is a wasteful number, since it uses less digits than its factorization.

57556338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370401.

The product of its digits is 378000, while the sum is 42.

The square root of 57556338 is about 7586.5893522715. The cubic root of 57556338 is about 386.0981476999.

The spelling of 57556338 in words is "fifty-seven million, five hundred fifty-six thousand, three hundred thirty-eight".