172315607 has 2 divisors, whose sum is σ = 172315608. Its totient is φ = 172315606.

The previous prime is 172315597. The next prime is 172315631. The reversal of 172315607 is 706513271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172315607 - 2¹⁴ = 172299223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172315687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86157803 + 86157804.

It is an arithmetic number, because the mean of its divisors is an integer number (86157804).

Almost surely, 2^172315607 is an apocalyptic number.

172315607 is a deficient number, since it is larger than the sum of its proper divisors (1).

172315607 is an equidigital number, since it uses as much as digits as its factorization.

172315607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 172315607 is about 13126.9039380960. The cubic root of 172315607 is about 556.4697208486.

Adding to 172315607 its reverse (706513271), we get a palindrome (878828878).

The spelling of 172315607 in words is "one hundred seventy-two million, three hundred fifteen thousand, six hundred seven".