23155173 has 32 divisors (see below), whose sum is σ = 36961920. Its totient is φ = 14273280.

The previous prime is 23155163. The next prime is 23155177. The reversal of 23155173 is 37155132.

It is not a de Polignac number, because 23155173 - 2⁴ = 23155157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23155177) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27586 + ... + 28412.

It is an arithmetic number, because the mean of its divisors is an integer number (1155060).

Almost surely, 2^23155173 is an apocalyptic number.

It is an amenable number.

23155173 is a deficient number, since it is larger than the sum of its proper divisors (13806747).

23155173 is a wasteful number, since it uses less digits than its factorization.

23155173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914 (or 908 counting only the distinct ones).

The product of its digits is 3150, while the sum is 27.

The square root of 23155173 is about 4811.9822318874. The cubic root of 23155173 is about 285.0248177834.

The spelling of 23155173 in words is "twenty-three million, one hundred fifty-five thousand, one hundred seventy-three".