256527163 has 2 divisors, whose sum is σ = 256527164. Its totient is φ = 256527162.

The previous prime is 256527149. The next prime is 256527169. The reversal of 256527163 is 361725652.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256527163 is a prime.

It is not a weakly prime, because it can be changed into another prime (256527169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128263581 + 128263582.

It is an arithmetic number, because the mean of its divisors is an integer number (128263582).

Almost surely, 2^256527163 is an apocalyptic number.

256527163 is a deficient number, since it is larger than the sum of its proper divisors (1).

256527163 is an equidigital number, since it uses as much as digits as its factorization.

256527163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 37.

The square root of 256527163 is about 16016.4653716106. The cubic root of 256527163 is about 635.3959652435.

The spelling of 256527163 in words is "two hundred fifty-six million, five hundred twenty-seven thousand, one hundred sixty-three".