557468561 has 4 divisors (see below), whose sum is σ = 600350772. Its totient is φ = 514586352.

The previous prime is 557468533. The next prime is 557468563. The reversal of 557468561 is 165864755.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39450961 + 518017600 = 6281^2 + 22760^2 .

It is a cyclic number.

It is not a de Polignac number, because 557468561 - 2⁶ = 557468497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (557468563) 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 3 ways as a sum of consecutive naturals, for example, 21441086 + ... + 21441111.

It is an arithmetic number, because the mean of its divisors is an integer number (150087693).

Almost surely, 2^557468561 is an apocalyptic number.

It is an amenable number.

557468561 is a deficient number, since it is larger than the sum of its proper divisors (42882211).

557468561 is a wasteful number, since it uses less digits than its factorization.

557468561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42882210.

The product of its digits is 1008000, while the sum is 47.

The square root of 557468561 is about 23610.7721390047. The cubic root of 557468561 is about 823.0131858967.

The spelling of 557468561 in words is "five hundred fifty-seven million, four hundred sixty-eight thousand, five hundred sixty-one".