16322161 has 2 divisors, whose sum is σ = 16322162. Its totient is φ = 16322160.

The previous prime is 16322153. The next prime is 16322171. The reversal of 16322161 is 16122361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12496225 + 3825936 = 3535^2 + 1956^2 .

It is a cyclic number.

It is not a de Polignac number, because 16322161 - 2³ = 16322153 is a prime.

It is not a weakly prime, because it can be changed into another prime (16322171) 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, 8161080 + 8161081.

It is an arithmetic number, because the mean of its divisors is an integer number (8161081).

Almost surely, 2^16322161 is an apocalyptic number.

It is an amenable number.

16322161 is a deficient number, since it is larger than the sum of its proper divisors (1).

16322161 is an equidigital number, since it uses as much as digits as its factorization.

16322161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 22.

The square root of 16322161 is about 4040.0694300965. The cubic root of 16322161 is about 253.6642234769.

The spelling of 16322161 in words is "sixteen million, three hundred twenty-two thousand, one hundred sixty-one".