2555565799 has 2 divisors, whose sum is σ = 2555565800. Its totient is φ = 2555565798.

The previous prime is 2555565769. The next prime is 2555565833. The reversal of 2555565799 is 9975655552.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2555565799 - 2²⁵ = 2522011367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2555565769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277782899 + 1277782900.

It is an arithmetic number, because the mean of its divisors is an integer number (1277782900).

Almost surely, 2^2555565799 is an apocalyptic number.

2555565799 is a deficient number, since it is larger than the sum of its proper divisors (1).

2555565799 is an equidigital number, since it uses as much as digits as its factorization.

2555565799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21262500, while the sum is 58.

The square root of 2555565799 is about 50552.6042751509. The cubic root of 2555565799 is about 1367.1904699344.

The spelling of 2555565799 in words is "two billion, five hundred fifty-five million, five hundred sixty-five thousand, seven hundred ninety-nine".