17130209 has 2 divisors, whose sum is σ = 17130210. Its totient is φ = 17130208.

The previous prime is 17130199. The next prime is 17130233. The reversal of 17130209 is 90203171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8720209 + 8410000 = 2953^2 + 2900^2 .

It is a cyclic number.

It is not a de Polignac number, because 17130209 - 2¹² = 17126113 is a prime.

It is not a weakly prime, because it can be changed into another prime (17130109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8565104 + 8565105.

It is an arithmetic number, because the mean of its divisors is an integer number (8565105).

Almost surely, 2^17130209 is an apocalyptic number.

It is an amenable number.

17130209 is a deficient number, since it is larger than the sum of its proper divisors (1).

17130209 is an equidigital number, since it uses as much as digits as its factorization.

17130209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 17130209 is about 4138.8656658558. The cubic root of 17130209 is about 257.7829685354.

The spelling of 17130209 in words is "seventeen million, one hundred thirty thousand, two hundred nine".