16117487 has 2 divisors, whose sum is σ = 16117488. Its totient is φ = 16117486.

The previous prime is 16117477. The next prime is 16117499. The reversal of 16117487 is 78471161.

It is a weak prime.

It is an emirp because it is prime and its reverse (78471161) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16117487 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16117447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8058743 + 8058744.

It is an arithmetic number, because the mean of its divisors is an integer number (8058744).

Almost surely, 2^16117487 is an apocalyptic number.

16117487 is a deficient number, since it is larger than the sum of its proper divisors (1).

16117487 is an equidigital number, since it uses as much as digits as its factorization.

16117487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9408, while the sum is 35.

The square root of 16117487 is about 4014.6590141630. The cubic root of 16117487 is about 252.5994745791.

The spelling of 16117487 in words is "sixteen million, one hundred seventeen thousand, four hundred eighty-seven".