172475497 has 2 divisors, whose sum is σ = 172475498. Its totient is φ = 172475496.

The previous prime is 172475491. The next prime is 172475533. The reversal of 172475497 is 794574271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91853056 + 80622441 = 9584^2 + 8979^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172475497 is a prime.

It is not a weakly prime, because it can be changed into another prime (172475491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86237748 + 86237749.

It is an arithmetic number, because the mean of its divisors is an integer number (86237749).

Almost surely, 2^172475497 is an apocalyptic number.

It is an amenable number.

172475497 is a deficient number, since it is larger than the sum of its proper divisors (1).

172475497 is an equidigital number, since it uses as much as digits as its factorization.

172475497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 493920, while the sum is 46.

The square root of 172475497 is about 13132.9926901678. The cubic root of 172475497 is about 556.6417819482.

The spelling of 172475497 in words is "one hundred seventy-two million, four hundred seventy-five thousand, four hundred ninety-seven".