2256559 has 2 divisors, whose sum is σ = 2256560. Its totient is φ = 2256558.

The previous prime is 2256557. The next prime is 2256571. The reversal of 2256559 is 9556522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2256559 - 2¹ = 2256557 is a prime.

Together with 2256557, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2256557) 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, 1128279 + 1128280.

It is an arithmetic number, because the mean of its divisors is an integer number (1128280).

2^2256559 is an apocalyptic number.

2256559 is a deficient number, since it is larger than the sum of its proper divisors (1).

2256559 is an equidigital number, since it uses as much as digits as its factorization.

2256559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 34.

The square root of 2256559 is about 1502.1847423004. The cubic root of 2256559 is about 131.1642753901.

The spelling of 2256559 in words is "two million, two hundred fifty-six thousand, five hundred fifty-nine".