255163161 has 16 divisors (see below), whose sum is σ = 379779840. Its totient is φ = 151047120.

The previous prime is 255163109. The next prime is 255163171. The reversal of 255163161 is 161361552.

It is not a de Polignac number, because 255163161 - 2²³ = 246774553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255163171) 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 in 15 ways as a sum of consecutive naturals, for example, 88491 + ... + 91328.

It is an arithmetic number, because the mean of its divisors is an integer number (23736240).

Almost surely, 2^255163161 is an apocalyptic number.

It is an amenable number.

255163161 is a deficient number, since it is larger than the sum of its proper divisors (124616679).

255163161 is a wasteful number, since it uses less digits than its factorization.

255163161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179876.

The product of its digits is 5400, while the sum is 30.

The square root of 255163161 is about 15973.8273748028. The cubic root of 255163161 is about 634.2677909892.

The spelling of 255163161 in words is "two hundred fifty-five million, one hundred sixty-three thousand, one hundred sixty-one".