256559327 has 2 divisors, whose sum is σ = 256559328. Its totient is φ = 256559326.

The previous prime is 256559311. The next prime is 256559333. The reversal of 256559327 is 723955652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256559327 - 2⁴ = 256559311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256589327) 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, 128279663 + 128279664.

It is an arithmetic number, because the mean of its divisors is an integer number (128279664).

Almost surely, 2^256559327 is an apocalyptic number.

256559327 is a deficient number, since it is larger than the sum of its proper divisors (1).

256559327 is an equidigital number, since it uses as much as digits as its factorization.

256559327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 567000, while the sum is 44.

The square root of 256559327 is about 16017.4694318422. The cubic root of 256559327 is about 635.4225199645.

The spelling of 256559327 in words is "two hundred fifty-six million, five hundred fifty-nine thousand, three hundred twenty-seven".