557591238 has 12 divisors (see below), whose sum is σ = 1208114388. Its totient is φ = 185863740.

The previous prime is 557591213. The next prime is 557591239. The reversal of 557591238 is 832195755.

557591238 is a `hidden beast` number, since 5 + 57 + 591 + 2 + 3 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 557591193 and 557591202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557591239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15488628 + ... + 15488663.

It is an arithmetic number, because the mean of its divisors is an integer number (100676199).

Almost surely, 2^557591238 is an apocalyptic number.

557591238 is an abundant number, since it is smaller than the sum of its proper divisors (650523150).

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

557591238 is a wasteful number, since it uses less digits than its factorization.

557591238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30977299 (or 30977296 counting only the distinct ones).

The product of its digits is 378000, while the sum is 45.

The square root of 557591238 is about 23613.3698992753. The cubic root of 557591238 is about 823.0735524599.

The spelling of 557591238 in words is "five hundred fifty-seven million, five hundred ninety-one thousand, two hundred thirty-eight".