2565559 has 2 divisors, whose sum is σ = 2565560. Its totient is φ = 2565558.

The previous prime is 2565463. The next prime is 2565569. The reversal of 2565559 is 9555652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2565559 - 2⁹ = 2565047 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2565569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282779 + 1282780.

It is an arithmetic number, because the mean of its divisors is an integer number (1282780).

2^2565559 is an apocalyptic number.

2565559 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565559 is an equidigital number, since it uses as much as digits as its factorization.

2565559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67500, while the sum is 37.

The square root of 2565559 is about 1601.7362454537. The cubic root of 2565559 is about 136.8970224429.

The spelling of 2565559 in words is "two million, five hundred sixty-five thousand, five hundred fifty-nine".