172494017 has 2 divisors, whose sum is σ = 172494018. Its totient is φ = 172494016.

The previous prime is 172493999. The next prime is 172494029. The reversal of 172494017 is 710494271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152744881 + 19749136 = 12359^2 + 4444^2 .

It is a cyclic number.

It is not a de Polignac number, because 172494017 - 2²⁴ = 155716801 is a prime.

It is a Chen 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, 86247008 + 86247009.

It is an arithmetic number, because the mean of its divisors is an integer number (86247009).

Almost surely, 2^172494017 is an apocalyptic number.

It is an amenable number.

172494017 is a deficient number, since it is larger than the sum of its proper divisors (1).

172494017 is an equidigital number, since it uses as much as digits as its factorization.

172494017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 172494017 is about 13133.6977656713. The cubic root of 172494017 is about 556.6617048494.

The spelling of 172494017 in words is "one hundred seventy-two million, four hundred ninety-four thousand, seventeen".