161199 has 6 divisors (see below), whose sum is σ = 232856. Its totient is φ = 107460.

The previous prime is 161167. The next prime is 161201. The reversal of 161199 is 991161.

161199 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161199 - 2⁵ = 161167 is a prime.

It is a Duffinian number.

161199 is strictly pandigital in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161149) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8947 + ... + 8964.

2¹⁶¹¹⁹⁹ is an apocalyptic number.

161199 is a deficient number, since it is larger than the sum of its proper divisors (71657).

161199 is a wasteful number, since it uses less digits than its factorization.

161199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17917 (or 17914 counting only the distinct ones).

The product of its digits is 486, while the sum is 27.

The square root of 161199 is about 401.4959526571. The cubic root of 161199 is about 54.4236227783.

The spelling of 161199 in words is "one hundred sixty-one thousand, one hundred ninety-nine".