16487291 has 2 divisors, whose sum is σ = 16487292. Its totient is φ = 16487290.

The previous prime is 16487249. The next prime is 16487299. The reversal of 16487291 is 19278461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16487291 - 2⁶ = 16487227 is a prime.

It is not a weakly prime, because it can be changed into another prime (16487299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8243645 + 8243646.

It is an arithmetic number, because the mean of its divisors is an integer number (8243646).

Almost surely, 2^16487291 is an apocalyptic number.

16487291 is a deficient number, since it is larger than the sum of its proper divisors (1).

16487291 is an equidigital number, since it uses as much as digits as its factorization.

16487291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 38.

The square root of 16487291 is about 4060.4545312071. The cubic root of 16487291 is about 254.5167883650.

The spelling of 16487291 in words is "sixteen million, four hundred eighty-seven thousand, two hundred ninety-one".