17172149 has 2 divisors, whose sum is σ = 17172150. Its totient is φ = 17172148.

The previous prime is 17172139. The next prime is 17172161. The reversal of 17172149 is 94127171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14554225 + 2617924 = 3815^2 + 1618^2 .

It is an emirp because it is prime and its reverse (94127171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 17172149 - 2⁸ = 17171893 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 (17172139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8586074 + 8586075.

It is an arithmetic number, because the mean of its divisors is an integer number (8586075).

Almost surely, 2^17172149 is an apocalyptic number.

It is an amenable number.

17172149 is a deficient number, since it is larger than the sum of its proper divisors (1).

17172149 is an equidigital number, since it uses as much as digits as its factorization.

17172149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3528, while the sum is 32.

The square root of 17172149 is about 4143.9291741052. The cubic root of 17172149 is about 257.9931743081.

The spelling of 17172149 in words is "seventeen million, one hundred seventy-two thousand, one hundred forty-nine".