99161 has 8 divisors (see below), whose sum is σ = 110880. Its totient is φ = 88128.

The previous prime is 99149. The next prime is 99173. The reversal of 99161 is 16199.

It is an interprime number because it is at equal distance from previous prime (99149) and next prime (99173).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-99161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 99161.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 99161.

It is not an unprimeable number, because it can be changed into a prime (99131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170 + ... + 476.

It is an arithmetic number, because the mean of its divisors is an integer number (13860).

2⁹⁹¹⁶¹ is an apocalyptic number.

It is an amenable number.

99161 is a deficient number, since it is larger than the sum of its proper divisors (11719).

99161 is a wasteful number, since it uses less digits than its factorization.

99161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343.

The product of its digits is 486, while the sum is 26.

The square root of 99161 is about 314.8983963122. The cubic root of 99161 is about 46.2857138321.

The spelling of 99161 in words is "ninety-nine thousand, one hundred sixty-one".