5558585561 has 2 divisors, whose sum is σ = 5558585562. Its totient is φ = 5558585560.

The previous prime is 5558585551. The next prime is 5558585567. The reversal of 5558585561 is 1655858555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5105959936 + 452625625 = 71456^2 + 21275^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5558585561 is a prime.

It is not a weakly prime, because it can be changed into another prime (5558585567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2779292780 + 2779292781.

It is an arithmetic number, because the mean of its divisors is an integer number (2779292781).

Almost surely, 2^5558585561 is an apocalyptic number.

It is an amenable number.

5558585561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5558585561 is an equidigital number, since it uses as much as digits as its factorization.

5558585561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6000000, while the sum is 53.

The square root of 5558585561 is about 74555.9223737457. The cubic root of 5558585561 is about 1771.4195429099.

The spelling of 5558585561 in words is "five billion, five hundred fifty-eight million, five hundred eighty-five thousand, five hundred sixty-one".