172341217 has 2 divisors, whose sum is σ = 172341218. Its totient is φ = 172341216.

The previous prime is 172341199. The next prime is 172341233. The reversal of 172341217 is 712143271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123676641 + 48664576 = 11121^2 + 6976^2 .

It is a cyclic number.

It is not a de Polignac number, because 172341217 - 2⁷ = 172341089 is a prime.

It is not a weakly prime, because it can be changed into another prime (172344217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86170608 + 86170609.

It is an arithmetic number, because the mean of its divisors is an integer number (86170609).

Almost surely, 2^172341217 is an apocalyptic number.

It is an amenable number.

172341217 is a deficient number, since it is larger than the sum of its proper divisors (1).

172341217 is an equidigital number, since it uses as much as digits as its factorization.

172341217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2352, while the sum is 28.

The square root of 172341217 is about 13127.8793793971. The cubic root of 172341217 is about 556.4972874821.

Adding to 172341217 its reverse (712143271), we get a palindrome (884484488).

The spelling of 172341217 in words is "one hundred seventy-two million, three hundred forty-one thousand, two hundred seventeen".