172717 has 2 divisors, whose sum is σ = 172718. Its totient is φ = 172716.

The previous prime is 172709. The next prime is 172721. The reversal of 172717 is 717271.

172717 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145161 + 27556 = 381^2 + 166^2 .

It is an emirp because it is prime and its reverse (717271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172717 - 2³ = 172709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172691 and 172700.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86358 + 86359.

It is an arithmetic number, because the mean of its divisors is an integer number (86359).

2¹⁷²⁷¹⁷ is an apocalyptic number.

It is an amenable number.

172717 is a deficient number, since it is larger than the sum of its proper divisors (1).

172717 is an equidigital number, since it uses as much as digits as its factorization.

172717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 686, while the sum is 25.

The square root of 172717 is about 415.5923483415. The cubic root of 172717 is about 55.6901467077.

Adding to 172717 its reverse (717271), we get a palindrome (889988).

The spelling of 172717 in words is "one hundred seventy-two thousand, seven hundred seventeen", and thus it is an iban number.