172252099 has 4 divisors (see below), whose sum is σ = 172967080.
Its totient is φ = 171537120.
The previous prime is 172252097. The next prime is 172252103. The reversal of 172252099 is 990252271.
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 172252099 - 21 = 172252097 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (172252097) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357129 + ... + 357610.
It is an arithmetic number, because the mean of its divisors is an integer number (43241770).
Almost surely, 2172252099 is an apocalyptic number.
172252099 is a deficient number, since it is larger than the sum of its proper divisors (714981).
172252099 is an equidigital number, since it uses as much as digits as its factorization.
172252099 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 714980.
The product of its (nonzero) digits is 22680, while the sum is 37.
The square root of 172252099 is about 13124.4847136945.
The cubic root of 172252099 is about 556.4013489772.
The spelling of 172252099 in words is "one hundred seventy-two million, two hundred fifty-two thousand, ninety-nine".