86171 has 2 divisors, whose sum is σ = 86172.
Its totient is φ = 86170.
The previous prime is 86161. The next prime is 86179. The reversal of 86171 is 17168.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 86171 - 210 = 85147 is a prime.
It is a Sophie Germain prime.
It is not a weakly prime, because it can be changed into another prime (86179) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43085 + 43086.
It is an arithmetic number, because the mean of its divisors is an integer number (43086).
286171 is an apocalyptic number.
86171 is a deficient number, since it is larger than the sum of its proper divisors (1).
86171 is an equidigital number, since it uses as much as digits as its factorization.
86171 is an evil number, because the sum of its binary digits is even.
The product of its digits is 336, while the sum is 23.
The square root of 86171 is about 293.5489737676.
The cubic root of 86171 is about 44.1692858697.
It can be divided in two parts, 86 and 171, that multiplied together give a triangular number (14706 = T171).
The spelling of 86171 in words is "eighty-six thousand, one hundred seventy-one".