155021163 has 16 divisors (see below), whose sum is σ = 227722752. Its totient is φ = 93020000.

The previous prime is 155021161. The next prime is 155021177. The reversal of 155021163 is 361120551.

It is a cyclic number.

It is not a de Polignac number, because 155021163 - 2¹ = 155021161 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (155021161) 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, 19923 + ... + 26588.

It is an arithmetic number, because the mean of its divisors is an integer number (14232672).

Almost surely, 2^155021163 is an apocalyptic number.

155021163 is a deficient number, since it is larger than the sum of its proper divisors (72701589).

155021163 is a wasteful number, since it uses less digits than its factorization.

155021163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46626.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 155021163 is about 12450.7494955123. The cubic root of 155021163 is about 537.1929819039.

The spelling of 155021163 in words is "one hundred fifty-five million, twenty-one thousand, one hundred sixty-three".