163255155 has 16 divisors (see below), whose sum is σ = 298523904. Its totient is φ = 74630880.

The previous prime is 163255151. The next prime is 163255177. The reversal of 163255155 is 551552361.

It is not a de Polignac number, because 163255155 - 2² = 163255151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163255151) 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, 777301 + ... + 777510.

It is an arithmetic number, because the mean of its divisors is an integer number (18657744).

Almost surely, 2^163255155 is an apocalyptic number.

163255155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

163255155 is a deficient number, since it is larger than the sum of its proper divisors (135268749).

163255155 is a wasteful number, since it uses less digits than its factorization.

163255155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554826.

The product of its digits is 22500, while the sum is 33.

The square root of 163255155 is about 12777.1340683269. The cubic root of 163255155 is about 546.5404388724.

The spelling of 163255155 in words is "one hundred sixty-three million, two hundred fifty-five thousand, one hundred fifty-five".