172116179 has 2 divisors, whose sum is σ = 172116180. Its totient is φ = 172116178.

The previous prime is 172116149. The next prime is 172116223. The reversal of 172116179 is 971611271.

It is a weak prime.

It is an emirp because it is prime and its reverse (971611271) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172116179 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (172116149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86058089 + 86058090.

It is an arithmetic number, because the mean of its divisors is an integer number (86058090).

Almost surely, 2^172116179 is an apocalyptic number.

172116179 is a deficient number, since it is larger than the sum of its proper divisors (1).

172116179 is an equidigital number, since it uses as much as digits as its factorization.

172116179 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292, while the sum is 35.

The square root of 172116179 is about 13119.3055837571. The cubic root of 172116179 is about 556.2549628139.

The spelling of 172116179 in words is "one hundred seventy-two million, one hundred sixteen thousand, one hundred seventy-nine".