172664252 has 6 divisors (see below), whose sum is σ = 302162448. Its totient is φ = 86332124.

The previous prime is 172664249. The next prime is 172664269. The reversal of 172664252 is 252466271.

172664252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 21583028 + ... + 21583035.

It is an arithmetic number, because the mean of its divisors is an integer number (50360408).

Almost surely, 2^172664252 is an apocalyptic number.

It is an amenable number.

172664252 is a deficient number, since it is larger than the sum of its proper divisors (129498196).

172664252 is a wasteful number, since it uses less digits than its factorization.

172664252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43166067 (or 43166065 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 172664252 is about 13140.1770155504. The cubic root of 172664252 is about 556.8447684902.

The spelling of 172664252 in words is "one hundred seventy-two million, six hundred sixty-four thousand, two hundred fifty-two".