16897171 has 2 divisors, whose sum is σ = 16897172. Its totient is φ = 16897170.

The previous prime is 16897163. The next prime is 16897189. The reversal of 16897171 is 17179861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16897171 - 2³ = 16897163 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16897141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8448585 + 8448586.

It is an arithmetic number, because the mean of its divisors is an integer number (8448586).

Almost surely, 2^16897171 is an apocalyptic number.

16897171 is a deficient number, since it is larger than the sum of its proper divisors (1).

16897171 is an equidigital number, since it uses as much as digits as its factorization.

16897171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 40.

The square root of 16897171 is about 4110.6168636836. The cubic root of 16897171 is about 256.6086743289.

The spelling of 16897171 in words is "sixteen million, eight hundred ninety-seven thousand, one hundred seventy-one".