557161056 has 72 divisors (see below), whose sum is σ = 1586710944. Its totient is φ = 185452800.

The previous prime is 557161049. The next prime is 557161057. The reversal of 557161056 is 650161755.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 557161056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557161057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 373945 + ... + 375431.

It is an arithmetic number, because the mean of its divisors is an integer number (22037652).

Almost surely, 2^557161056 is an apocalyptic number.

It is an amenable number.

557161056 is an abundant number, since it is smaller than the sum of its proper divisors (1029549888).

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

557161056 is a wasteful number, since it uses less digits than its factorization.

557161056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2804 (or 2793 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The square root of 557161056 is about 23604.2592766645. The cubic root of 557161056 is about 822.8618307438.

The spelling of 557161056 in words is "five hundred fifty-seven million, one hundred sixty-one thousand, fifty-six".