172422859 has 8 divisors (see below), whose sum is σ = 197203680. Its totient is φ = 147679296.

The previous prime is 172422847. The next prime is 172422863. The reversal of 172422859 is 958224271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172422859 - 2⁵ = 172422827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172422259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1437 + ... + 18625.

It is an arithmetic number, because the mean of its divisors is an integer number (24650460).

Almost surely, 2^172422859 is an apocalyptic number.

172422859 is a deficient number, since it is larger than the sum of its proper divisors (24780821).

172422859 is a wasteful number, since it uses less digits than its factorization.

172422859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18629.

The product of its digits is 80640, while the sum is 40.

The square root of 172422859 is about 13130.9885004900. The cubic root of 172422859 is about 556.5851487996.

The spelling of 172422859 in words is "one hundred seventy-two million, four hundred twenty-two thousand, eight hundred fifty-nine".