17272109 has 2 divisors, whose sum is σ = 17272110. Its totient is φ = 17272108.

The previous prime is 17272093. The next prime is 17272133. The reversal of 17272109 is 90127271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12096484 + 5175625 = 3478^2 + 2275^2 .

It is a cyclic number.

It is not a de Polignac number, because 17272109 - 2⁴ = 17272093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17272169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8636054 + 8636055.

It is an arithmetic number, because the mean of its divisors is an integer number (8636055).

Almost surely, 2^17272109 is an apocalyptic number.

It is an amenable number.

17272109 is a deficient number, since it is larger than the sum of its proper divisors (1).

17272109 is an equidigital number, since it uses as much as digits as its factorization.

17272109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 17272109 is about 4155.9726899969. The cubic root of 17272109 is about 258.4928034691.

The spelling of 17272109 in words is "seventeen million, two hundred seventy-two thousand, one hundred nine".