16320481 has 2 divisors, whose sum is σ = 16320482. Its totient is φ = 16320480.

The previous prime is 16320467. The next prime is 16320517. The reversal of 16320481 is 18402361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14130081 + 2190400 = 3759^2 + 1480^2 .

It is a cyclic number.

It is not a de Polignac number, because 16320481 - 2⁹ = 16319969 is a prime.

It is a super-2 number, since 2×16320481² = 532716200142722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16320401) 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, 8160240 + 8160241.

It is an arithmetic number, because the mean of its divisors is an integer number (8160241).

Almost surely, 2^16320481 is an apocalyptic number.

It is an amenable number.

16320481 is a deficient number, since it is larger than the sum of its proper divisors (1).

16320481 is an equidigital number, since it uses as much as digits as its factorization.

16320481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 16320481 is about 4039.8615075272. The cubic root of 16320481 is about 253.6555201661.

The spelling of 16320481 in words is "sixteen million, three hundred twenty thousand, four hundred eighty-one".