5558565161 has 2 divisors, whose sum is σ = 5558565162. Its totient is φ = 5558565160.

The previous prime is 5558565139. The next prime is 5558565239. The reversal of 5558565161 is 1615658555.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4497043600 + 1061521561 = 67060^2 + 32581^2 .

It is a cyclic number.

It is not a de Polignac number, because 5558565161 - 2⁶ = 5558565097 is a prime.

It is not a weakly prime, because it can be changed into another prime (5558562161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2779282580 + 2779282581.

It is an arithmetic number, because the mean of its divisors is an integer number (2779282581).

Almost surely, 2^5558565161 is an apocalyptic number.

It is an amenable number.

5558565161 is a deficient number, since it is larger than the sum of its proper divisors (1).

5558565161 is an equidigital number, since it uses as much as digits as its factorization.

5558565161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 900000, while the sum is 47.

The square root of 5558565161 is about 74555.7855635631. The cubic root of 5558565161 is about 1771.4173758717.

The spelling of 5558565161 in words is "five billion, five hundred fifty-eight million, five hundred sixty-five thousand, one hundred sixty-one".