17164991 has 2 divisors, whose sum is σ = 17164992. Its totient is φ = 17164990.

The previous prime is 17164963. The next prime is 17165009. The reversal of 17164991 is 19946171.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17164991 is a prime.

It is a Sophie Germain 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 (17164291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8582495 + 8582496.

It is an arithmetic number, because the mean of its divisors is an integer number (8582496).

Almost surely, 2^17164991 is an apocalyptic number.

17164991 is a deficient number, since it is larger than the sum of its proper divisors (1).

17164991 is an equidigital number, since it uses as much as digits as its factorization.

17164991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 38.

The square root of 17164991 is about 4143.0654110212. The cubic root of 17164991 is about 257.9573222278.

The spelling of 17164991 in words is "seventeen million, one hundred sixty-four thousand, nine hundred ninety-one".