16322081 has 2 divisors, whose sum is σ = 16322082. Its totient is φ = 16322080.

The previous prime is 16322029. The next prime is 16322147. The reversal of 16322081 is 18022361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16072081 + 250000 = 4009^2 + 500^2 .

It is a cyclic number.

It is not a de Polignac number, because 16322081 - 2⁶ = 16322017 is a prime.

It is a super-2 number, since 2×16322081² = 532820656341122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (16322021) 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 as a sum of consecutive naturals, namely, 8161040 + 8161041.

It is an arithmetic number, because the mean of its divisors is an integer number (8161041).

Almost surely, 2^16322081 is an apocalyptic number.

It is an amenable number.

16322081 is a deficient number, since it is larger than the sum of its proper divisors (1).

16322081 is an equidigital number, since it uses as much as digits as its factorization.

16322081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 16322081 is about 4040.0595292644. The cubic root of 16322081 is about 253.6638090470.

The spelling of 16322081 in words is "sixteen million, three hundred twenty-two thousand, eighty-one".