172445166 has 16 divisors (see below), whose sum is σ = 383211600. Its totient is φ = 57481704.

The previous prime is 172445153. The next prime is 172445173. The reversal of 172445166 is 661544271.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 172445166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1596661 + ... + 1596768.

It is an arithmetic number, because the mean of its divisors is an integer number (23950725).

Almost surely, 2^172445166 is an apocalyptic number.

172445166 is an abundant number, since it is smaller than the sum of its proper divisors (210766434).

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

172445166 is a wasteful number, since it uses less digits than its factorization.

172445166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3193440 (or 3193434 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 172445166 is about 13131.8378759411. The cubic root of 172445166 is about 556.6091502759.

The spelling of 172445166 in words is "one hundred seventy-two million, four hundred forty-five thousand, one hundred sixty-six".