2556259 has 2 divisors, whose sum is σ = 2556260. Its totient is φ = 2556258.

The previous prime is 2556233. The next prime is 2556277. The reversal of 2556259 is 9526552.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2556259 is a prime.

It is not a weakly prime, because it can be changed into another prime (2556559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278129 + 1278130.

It is an arithmetic number, because the mean of its divisors is an integer number (1278130).

2^2556259 is an apocalyptic number.

2556259 is a deficient number, since it is larger than the sum of its proper divisors (1).

2556259 is an equidigital number, since it uses as much as digits as its factorization.

2556259 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 2556259 is about 1598.8305100917. The cubic root of 2556259 is about 136.7314076237.

The spelling of 2556259 in words is "two million, five hundred fifty-six thousand, two hundred fifty-nine".