255814859 has 2 divisors, whose sum is σ = 255814860. Its totient is φ = 255814858.

The previous prime is 255814831. The next prime is 255814891. The reversal of 255814859 is 958418552.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255814859 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (255814159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127907429 + 127907430.

It is an arithmetic number, because the mean of its divisors is an integer number (127907430).

Almost surely, 2^255814859 is an apocalyptic number.

255814859 is a deficient number, since it is larger than the sum of its proper divisors (1).

255814859 is an equidigital number, since it uses as much as digits as its factorization.

255814859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576000, while the sum is 47.

The square root of 255814859 is about 15994.2132973148. The cubic root of 255814859 is about 634.8073145919.

The spelling of 255814859 in words is "two hundred fifty-five million, eight hundred fourteen thousand, eight hundred fifty-nine".