172717043 has 2 divisors, whose sum is σ = 172717044. Its totient is φ = 172717042.

The previous prime is 172717031. The next prime is 172717063. The reversal of 172717043 is 340717271.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172717043 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (172717063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86358521 + 86358522.

It is an arithmetic number, because the mean of its divisors is an integer number (86358522).

Almost surely, 2^172717043 is an apocalyptic number.

172717043 is a deficient number, since it is larger than the sum of its proper divisors (1).

172717043 is an equidigital number, since it uses as much as digits as its factorization.

172717043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8232, while the sum is 32.

The square root of 172717043 is about 13142.1856249256. The cubic root of 172717043 is about 556.9015132929.

The spelling of 172717043 in words is "one hundred seventy-two million, seven hundred seventeen thousand, forty-three".