172316527 has 2 divisors, whose sum is σ = 172316528. Its totient is φ = 172316526.

The previous prime is 172316513. The next prime is 172316531. The reversal of 172316527 is 725613271.

It is a strong prime.

It is an emirp because it is prime and its reverse (725613271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172316527 - 2²³ = 163927919 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172316492 and 172316501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172316537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86158263 + 86158264.

It is an arithmetic number, because the mean of its divisors is an integer number (86158264).

Almost surely, 2^172316527 is an apocalyptic number.

172316527 is a deficient number, since it is larger than the sum of its proper divisors (1).

172316527 is an equidigital number, since it uses as much as digits as its factorization.

172316527 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 34.

The square root of 172316527 is about 13126.9389805849. The cubic root of 172316527 is about 556.4707111849.

Adding to 172316527 its reverse (725613271), we get a palindrome (897929798).

The spelling of 172316527 in words is "one hundred seventy-two million, three hundred sixteen thousand, five hundred twenty-seven".