256122163 has 16 divisors (see below), whose sum is σ = 283551840. Its totient is φ = 229408000.

The previous prime is 256122149. The next prime is 256122193. The reversal of 256122163 is 361221652.

256122163 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 256122163 - 2⁵ = 256122131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256122133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298431 + ... + 299287.

It is an arithmetic number, because the mean of its divisors is an integer number (17721990).

Almost surely, 2^256122163 is an apocalyptic number.

256122163 is a deficient number, since it is larger than the sum of its proper divisors (27429677).

256122163 is a wasteful number, since it uses less digits than its factorization.

256122163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238.

The product of its digits is 4320, while the sum is 28.

The square root of 256122163 is about 16003.8171384204. The cubic root of 256122163 is about 635.0614055979.

It can be divided in two parts, 2 and 56122163, that added together give a palindrome (56122165).

The spelling of 256122163 in words is "two hundred fifty-six million, one hundred twenty-two thousand, one hundred sixty-three".