172422163 has 4 divisors (see below), whose sum is σ = 173181960. Its totient is φ = 171662368.

The previous prime is 172422149. The next prime is 172422167. The reversal of 172422163 is 361224271.

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

It is a cyclic number.

It is not a de Polignac number, because 172422163 - 2⁹ = 172421651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172422167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379558 + ... + 380011.

It is an arithmetic number, because the mean of its divisors is an integer number (43295490).

Almost surely, 2^172422163 is an apocalyptic number.

172422163 is a deficient number, since it is larger than the sum of its proper divisors (759797).

172422163 is an equidigital number, since it uses as much as digits as its factorization.

172422163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759796.

The product of its digits is 4032, while the sum is 28.

The square root of 172422163 is about 13130.9619982696. The cubic root of 172422163 is about 556.5843998970.

The spelling of 172422163 in words is "one hundred seventy-two million, four hundred twenty-two thousand, one hundred sixty-three".