256163 has 2 divisors, whose sum is σ = 256164. Its totient is φ = 256162.

The previous prime is 256147. The next prime is 256169. The reversal of 256163 is 361652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256163 - 2⁴ = 256147 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (256169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128081 + 128082.

It is an arithmetic number, because the mean of its divisors is an integer number (128082).

2²⁵⁶¹⁶³ is an apocalyptic number.

256163 is a deficient number, since it is larger than the sum of its proper divisors (1).

256163 is an equidigital number, since it uses as much as digits as its factorization.

256163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 23.

The square root of 256163 is about 506.1254785130. The cubic root of 256163 is about 63.5095155930.

It can be divided in two parts, 2 and 56163, that added together give a palindrome (56165).

The spelling of 256163 in words is "two hundred fifty-six thousand, one hundred sixty-three".