172320199 has 4 divisors (see below), whose sum is σ = 172357360. Its totient is φ = 172283040.

The previous prime is 172320173. The next prime is 172320259. The reversal of 172320199 is 991023271.

It is a happy number.

172320199 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 172320199 - 2¹⁵ = 172287431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172320149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10434 + ... + 21295.

It is an arithmetic number, because the mean of its divisors is an integer number (43089340).

Almost surely, 2^172320199 is an apocalyptic number.

172320199 is a deficient number, since it is larger than the sum of its proper divisors (37161).

172320199 is an equidigital number, since it uses as much as digits as its factorization.

172320199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37160.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 172320199 is about 13127.0788448916. The cubic root of 172320199 is about 556.4746638836.

The spelling of 172320199 in words is "one hundred seventy-two million, three hundred twenty thousand, one hundred ninety-nine".