557558561 has 16 divisors (see below), whose sum is σ = 642364800. Its totient is φ = 474059520.

The previous prime is 557558543. The next prime is 557558579. The reversal of 557558561 is 165855755.

It is an interprime number because it is at equal distance from previous prime (557558543) and next prime (557558579).

It is a cyclic number.

It is not a de Polignac number, because 557558561 - 2²² = 553364257 is a prime.

It is a Curzon number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (557558501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 588290 + ... + 589236.

It is an arithmetic number, because the mean of its divisors is an integer number (40147800).

Almost surely, 2^557558561 is an apocalyptic number.

It is an amenable number.

557558561 is a deficient number, since it is larger than the sum of its proper divisors (84806239).

557558561 is a wasteful number, since it uses less digits than its factorization.

557558561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544.

The product of its digits is 1050000, while the sum is 47.

The square root of 557558561 is about 23612.6779718015. The cubic root of 557558561 is about 823.0574737162.

The spelling of 557558561 in words is "five hundred fifty-seven million, five hundred fifty-eight thousand, five hundred sixty-one".