172265226 has 32 divisors (see below), whose sum is σ = 394149888. Its totient is φ = 49168560.

The previous prime is 172265221. The next prime is 172265227. The reversal of 172265226 is 622562271.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (172265221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65191 + ... + 67781.

It is an arithmetic number, because the mean of its divisors is an integer number (12317184).

Almost surely, 2^172265226 is an apocalyptic number.

172265226 is an abundant number, since it is smaller than the sum of its proper divisors (221884662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172265226 is a wasteful number, since it uses less digits than its factorization.

172265226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4186.

The product of its digits is 20160, while the sum is 33.

The square root of 172265226 is about 13124.9847999912. The cubic root of 172265226 is about 556.4154827091.

The spelling of 172265226 in words is "one hundred seventy-two million, two hundred sixty-five thousand, two hundred twenty-six".