5565165901 has 2 divisors, whose sum is σ = 5565165902. Its totient is φ = 5565165900.

The previous prime is 5565165889. The next prime is 5565165937. The reversal of 5565165901 is 1095615655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5222952900 + 342213001 = 72270^2 + 18499^2 .

It is a cyclic number.

It is not a de Polignac number, because 5565165901 - 2¹⁷ = 5565034829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5565195901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2782582950 + 2782582951.

It is an arithmetic number, because the mean of its divisors is an integer number (2782582951).

Almost surely, 2^5565165901 is an apocalyptic number.

It is an amenable number.

5565165901 is a deficient number, since it is larger than the sum of its proper divisors (1).

5565165901 is an equidigital number, since it uses as much as digits as its factorization.

5565165901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 202500, while the sum is 43.

The square root of 5565165901 is about 74600.0395509279. The cubic root of 5565165901 is about 1772.1182785887.

The spelling of 5565165901 in words is "five billion, five hundred sixty-five million, one hundred sixty-five thousand, nine hundred one".