16272517 has 2 divisors, whose sum is σ = 16272518. Its totient is φ = 16272516.

The previous prime is 16272497. The next prime is 16272527. The reversal of 16272517 is 71527261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15634116 + 638401 = 3954^2 + 799^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16272517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16272527) 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, 8136258 + 8136259.

It is an arithmetic number, because the mean of its divisors is an integer number (8136259).

Almost surely, 2^16272517 is an apocalyptic number.

It is an amenable number.

16272517 is a deficient number, since it is larger than the sum of its proper divisors (1).

16272517 is an equidigital number, since it uses as much as digits as its factorization.

16272517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5880, while the sum is 31.

The square root of 16272517 is about 4033.9207974376. The cubic root of 16272517 is about 253.4067882947.

Adding to 16272517 its reverse (71527261), we get a palindrome (87799778).

The spelling of 16272517 in words is "sixteen million, two hundred seventy-two thousand, five hundred seventeen".