172297417 has 2 divisors, whose sum is σ = 172297418. Its totient is φ = 172297416.

The previous prime is 172297379. The next prime is 172297429. The reversal of 172297417 is 714792271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125798656 + 46498761 = 11216^2 + 6819^2 .

It is an emirp because it is prime and its reverse (714792271) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172297417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172297417.

It is not a weakly prime, because it can be changed into another prime (172297487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86148708 + 86148709.

It is an arithmetic number, because the mean of its divisors is an integer number (86148709).

Almost surely, 2^172297417 is an apocalyptic number.

It is an amenable number.

172297417 is a deficient number, since it is larger than the sum of its proper divisors (1).

172297417 is an equidigital number, since it uses as much as digits as its factorization.

172297417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49392, while the sum is 40.

The square root of 172297417 is about 13126.2110679358. The cubic root of 172297417 is about 556.4501394526.

The spelling of 172297417 in words is "one hundred seventy-two million, two hundred ninety-seven thousand, four hundred seventeen".