16320517 has 2 divisors, whose sum is σ = 16320518. Its totient is φ = 16320516.

The previous prime is 16320481. The next prime is 16320529. The reversal of 16320517 is 71502361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15729156 + 591361 = 3966^2 + 769^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16320517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16320491 and 16320500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16350517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8160258 + 8160259.

It is an arithmetic number, because the mean of its divisors is an integer number (8160259).

Almost surely, 2^16320517 is an apocalyptic number.

It is an amenable number.

16320517 is a deficient number, since it is larger than the sum of its proper divisors (1).

16320517 is an equidigital number, since it uses as much as digits as its factorization.

16320517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 16320517 is about 4039.8659631230. The cubic root of 16320517 is about 253.6557066719.

Adding to 16320517 its reverse (71502361), we get a palindrome (87822878).

The spelling of 16320517 in words is "sixteen million, three hundred twenty thousand, five hundred seventeen".