2259556997 has 2 divisors, whose sum is σ = 2259556998. Its totient is φ = 2259556996.

The previous prime is 2259556987. The next prime is 2259557051. The reversal of 2259556997 is 7996559522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2255680036 + 3876961 = 47494^2 + 1969^2 .

It is a cyclic number.

It is not a de Polignac number, because 2259556997 - 2⁶ = 2259556933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2259556967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1129778498 + 1129778499.

It is an arithmetic number, because the mean of its divisors is an integer number (1129778499).

Almost surely, 2^2259556997 is an apocalyptic number.

It is an amenable number.

2259556997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2259556997 is an equidigital number, since it uses as much as digits as its factorization.

2259556997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15309000, while the sum is 59.

The square root of 2259556997 is about 47534.7977485968. The cubic root of 2259556997 is about 1312.2233666661.

The spelling of 2259556997 in words is "two billion, two hundred fifty-nine million, five hundred fifty-six thousand, nine hundred ninety-seven".