172922 has 4 divisors (see below), whose sum is σ = 259386. Its totient is φ = 86460.

The previous prime is 172883. The next prime is 172933. The reversal of 172922 is 229271.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 89401 + 83521 = 299^2 + 289^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 172922.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43229 + ... + 43232.

2¹⁷²⁹²² is an apocalyptic number.

172922 is a deficient number, since it is larger than the sum of its proper divisors (86464).

172922 is an equidigital number, since it uses as much as digits as its factorization.

172922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86463.

The product of its digits is 504, while the sum is 23.

The square root of 172922 is about 415.8389111182. The cubic root of 172922 is about 55.7121711104.

The spelling of 172922 in words is "one hundred seventy-two thousand, nine hundred twenty-two".