557255538 has 60 divisors (see below), whose sum is σ = 1452549582. Its totient is φ = 159213600.

The previous prime is 557255527. The next prime is 557255539. The reversal of 557255538 is 835552755.

It can be written as a sum of positive squares in only one way, i.e., 383885649 + 173369889 = 19593^2 + 13167^2 .

It is a junction number, because it is equal to n+sod(n) for n = 557255493 and 557255502.

It is not an unprimeable number, because it can be changed into a prime (557255539) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 27163 + ... + 43038.

Almost surely, 2^557255538 is an apocalyptic number.

557255538 is an abundant number, since it is smaller than the sum of its proper divisors (895294044).

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

557255538 is a wasteful number, since it uses less digits than its factorization.

557255538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70229 (or 70213 counting only the distinct ones).

The product of its digits is 1050000, while the sum is 45.

The square root of 557255538 is about 23606.2605679087. The cubic root of 557255538 is about 822.9083410759.

The spelling of 557255538 in words is "five hundred fifty-seven million, two hundred fifty-five thousand, five hundred thirty-eight".