557549864 has 8 divisors (see below), whose sum is σ = 1045406010. Its totient is φ = 278774928.

The previous prime is 557549827. The next prime is 557549869. The reversal of 557549864 is 468945755.

It can be written as a sum of positive squares in only one way, i.e., 458388100 + 99161764 = 21410^2 + 9958^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (557549869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34846859 + ... + 34846874.

Almost surely, 2^557549864 is an apocalyptic number.

It is an amenable number.

557549864 is a deficient number, since it is larger than the sum of its proper divisors (487856146).

557549864 is a wasteful number, since it uses less digits than its factorization.

557549864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69693739 (or 69693735 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 53.

The square root of 557549864 is about 23612.4938115397. The cubic root of 557549864 is about 823.0531942446.

The spelling of 557549864 in words is "five hundred fifty-seven million, five hundred forty-nine thousand, eight hundred sixty-four".