117854171 has 2 divisors, whose sum is σ = 117854172. Its totient is φ = 117854170.

The previous prime is 117854167. The next prime is 117854197. The reversal of 117854171 is 171458711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117854171 - 2² = 117854167 is a prime.

It is not a weakly prime, because it can be changed into another prime (117854161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58927085 + 58927086.

It is an arithmetic number, because the mean of its divisors is an integer number (58927086).

Almost surely, 2^117854171 is an apocalyptic number.

117854171 is a deficient number, since it is larger than the sum of its proper divisors (1).

117854171 is an equidigital number, since it uses as much as digits as its factorization.

117854171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7840, while the sum is 35.

The square root of 117854171 is about 10856.0660922822. The cubic root of 117854171 is about 490.2846756182.

The spelling of 117854171 in words is "one hundred seventeen million, eight hundred fifty-four thousand, one hundred seventy-one".