172494307 has 2 divisors, whose sum is σ = 172494308. Its totient is φ = 172494306.

The previous prime is 172494281. The next prime is 172494313. The reversal of 172494307 is 703494271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172494307 - 2²³ = 164105699 is a prime.

It is not a weakly prime, because it can be changed into another prime (172494317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86247153 + 86247154.

It is an arithmetic number, because the mean of its divisors is an integer number (86247154).

Almost surely, 2^172494307 is an apocalyptic number.

172494307 is a deficient number, since it is larger than the sum of its proper divisors (1).

172494307 is an equidigital number, since it uses as much as digits as its factorization.

172494307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 172494307 is about 13133.7088059695. The cubic root of 172494307 is about 556.6620168057.

The spelling of 172494307 in words is "one hundred seventy-two million, four hundred ninety-four thousand, three hundred seven".