117917171 has 2 divisors, whose sum is σ = 117917172. Its totient is φ = 117917170.

The previous prime is 117917143. The next prime is 117917183. The reversal of 117917171 is 171719711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117917171 - 2¹⁴ = 117900787 is a prime.

It is not a weakly prime, because it can be changed into another prime (117917101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58958585 + 58958586.

It is an arithmetic number, because the mean of its divisors is an integer number (58958586).

Almost surely, 2^117917171 is an apocalyptic number.

117917171 is a deficient number, since it is larger than the sum of its proper divisors (1).

117917171 is an equidigital number, since it uses as much as digits as its factorization.

117917171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3087, while the sum is 35.

The square root of 117917171 is about 10858.9673081744. The cubic root of 117917171 is about 490.3720220740.

The spelling of 117917171 in words is "one hundred seventeen million, nine hundred seventeen thousand, one hundred seventy-one".