199852171 has 2 divisors, whose sum is σ = 199852172. Its totient is φ = 199852170.

The previous prime is 199852123. The next prime is 199852199. The reversal of 199852171 is 171258991.

It is a strong prime.

It is an emirp because it is prime and its reverse (171258991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199852171 - 2¹⁷ = 199721099 is a prime.

It is not a weakly prime, because it can be changed into another prime (199852271) 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 as a sum of consecutive naturals, namely, 99926085 + 99926086.

It is an arithmetic number, because the mean of its divisors is an integer number (99926086).

Almost surely, 2^199852171 is an apocalyptic number.

199852171 is a deficient number, since it is larger than the sum of its proper divisors (1).

199852171 is an equidigital number, since it uses as much as digits as its factorization.

199852171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 43.

The square root of 199852171 is about 14136.9081131625. The cubic root of 199852171 is about 584.6594272554.

The spelling of 199852171 in words is "one hundred ninety-nine million, eight hundred fifty-two thousand, one hundred seventy-one".