16486517 has 2 divisors, whose sum is σ = 16486518. Its totient is φ = 16486516.

The previous prime is 16486507. The next prime is 16486523. The reversal of 16486517 is 71568461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11062276 + 5424241 = 3326^2 + 2329^2 .

It is an emirp because it is prime and its reverse (71568461) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16486517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16486507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8243258 + 8243259.

It is an arithmetic number, because the mean of its divisors is an integer number (8243259).

Almost surely, 2^16486517 is an apocalyptic number.

It is an amenable number.

16486517 is a deficient number, since it is larger than the sum of its proper divisors (1).

16486517 is an equidigital number, since it uses as much as digits as its factorization.

16486517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 38.

The square root of 16486517 is about 4060.3592205616. The cubic root of 16486517 is about 254.5128055180.

The spelling of 16486517 in words is "sixteen million, four hundred eighty-six thousand, five hundred seventeen".