172272206 has 4 divisors (see below), whose sum is σ = 258408312. Its totient is φ = 86136102.

The previous prime is 172272197. The next prime is 172272223. The reversal of 172272206 is 602272271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 602272271 = 2383 ⋅252737.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43068050 + ... + 43068053.

It is an arithmetic number, because the mean of its divisors is an integer number (64602078).

Almost surely, 2^172272206 is an apocalyptic number.

172272206 is a deficient number, since it is larger than the sum of its proper divisors (86136106).

172272206 is an equidigital number, since it uses as much as digits as its factorization.

172272206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86136105.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 172272206 is about 13125.2507023676. The cubic root of 172272206 is about 556.4229977248.

The spelling of 172272206 in words is "one hundred seventy-two million, two hundred seventy-two thousand, two hundred six".