163161 has 8 divisors (see below), whose sum is σ = 241760. Its totient is φ = 108756.

The previous prime is 163151. The next prime is 163169. The reversal of 163161 is 161361.

It is not a de Polignac number, because 163161 - 2⁵ = 163129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (163169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2995 + ... + 3048.

It is an arithmetic number, because the mean of its divisors is an integer number (30220).

2¹⁶³¹⁶¹ is an apocalyptic number.

It is an amenable number.

163161 is a deficient number, since it is larger than the sum of its proper divisors (78599).

163161 is an equidigital number, since it uses as much as digits as its factorization.

163161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6052 (or 6046 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 163161 is about 403.9319249577. The cubic root of 163161 is about 54.6435348958.

It can be divided in two parts, 163 and 161, that added together give a square (324 = 18²).

The spelling of 163161 in words is "one hundred sixty-three thousand, one hundred sixty-one".