256159567 has 2 divisors, whose sum is σ = 256159568. Its totient is φ = 256159566.

The previous prime is 256159537. The next prime is 256159583. The reversal of 256159567 is 765951652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256159567 - 2¹⁵ = 256126799 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 (256159507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128079783 + 128079784.

It is an arithmetic number, because the mean of its divisors is an integer number (128079784).

Almost surely, 2^256159567 is an apocalyptic number.

256159567 is a deficient number, since it is larger than the sum of its proper divisors (1).

256159567 is an equidigital number, since it uses as much as digits as its factorization.

256159567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 567000, while the sum is 46.

The square root of 256159567 is about 16004.9856919649. The cubic root of 256159567 is about 635.0923188157.

It can be divided in two parts, 2561 and 59567, that added together give a triangular number (62128 = T₃₅₂).

The spelling of 256159567 in words is "two hundred fifty-six million, one hundred fifty-nine thousand, five hundred sixty-seven".