256655527 has 2 divisors, whose sum is σ = 256655528. Its totient is φ = 256655526.

The previous prime is 256655491. The next prime is 256655533. The reversal of 256655527 is 725556652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256655527 - 2¹¹ = 256653479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256655537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128327763 + 128327764.

It is an arithmetic number, because the mean of its divisors is an integer number (128327764).

Almost surely, 2^256655527 is an apocalyptic number.

256655527 is a deficient number, since it is larger than the sum of its proper divisors (1).

256655527 is an equidigital number, since it uses as much as digits as its factorization.

256655527 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 630000, while the sum is 43.

The square root of 256655527 is about 16020.4721216324. The cubic root of 256655527 is about 635.5019298077.

The spelling of 256655527 in words is "two hundred fifty-six million, six hundred fifty-five thousand, five hundred twenty-seven".