172053666 has 32 divisors (see below), whose sum is σ = 385862400. Its totient is φ = 56823120.

The previous prime is 172053647. The next prime is 172053701. The reversal of 172053666 is 666350271.

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 172053666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8730 + ... + 20501.

It is an arithmetic number, because the mean of its divisors is an integer number (12058200).

Almost surely, 2^172053666 is an apocalyptic number.

172053666 is an abundant number, since it is smaller than the sum of its proper divisors (213808734).

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

172053666 is a wasteful number, since it uses less digits than its factorization.

172053666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29351 (or 29345 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 172053666 is about 13116.9228861040. The cubic root of 172053666 is about 556.1876102899.

The spelling of 172053666 in words is "one hundred seventy-two million, fifty-three thousand, six hundred sixty-six".