256116559 has 2 divisors, whose sum is σ = 256116560. Its totient is φ = 256116558.

The previous prime is 256116541. The next prime is 256116593. The reversal of 256116559 is 955611652.

256116559 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256116559 - 2¹⁷ = 255985487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256116059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128058279 + 128058280.

It is an arithmetic number, because the mean of its divisors is an integer number (128058280).

Almost surely, 2^256116559 is an apocalyptic number.

256116559 is a deficient number, since it is larger than the sum of its proper divisors (1).

256116559 is an equidigital number, since it uses as much as digits as its factorization.

256116559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81000, while the sum is 40.

The square root of 256116559 is about 16003.6420542325. The cubic root of 256116559 is about 635.0567738107.

The spelling of 256116559 in words is "two hundred fifty-six million, one hundred sixteen thousand, five hundred fifty-nine".