172122275 has 18 divisors (see below), whose sum is σ = 231118020. Its totient is φ = 127102560.

The previous prime is 172122257. The next prime is 172122289. The reversal of 172122275 is 572221271.

It is not a de Polignac number, because 172122275 - 2¹⁰ = 172121251 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 16145 + ... + 24594.

It is an arithmetic number, because the mean of its divisors is an integer number (12839890).

Almost surely, 2^172122275 is an apocalyptic number.

172122275 is a deficient number, since it is larger than the sum of its proper divisors (58995745).

172122275 is a wasteful number, since it uses less digits than its factorization.

172122275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40775 (or 40757 counting only the distinct ones).

The product of its digits is 3920, while the sum is 29.

The square root of 172122275 is about 13119.5379110699. The cubic root of 172122275 is about 556.2615298708.

The spelling of 172122275 in words is "one hundred seventy-two million, one hundred twenty-two thousand, two hundred seventy-five".