82171 has 2 divisors, whose sum is σ = 82172. Its totient is φ = 82170.

The previous prime is 82163. The next prime is 82183. The reversal of 82171 is 17128.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82171 - 2³ = 82163 is a prime.

It is not a weakly prime, because it can be changed into another prime (82141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41085 + 41086.

It is an arithmetic number, because the mean of its divisors is an integer number (41086).

2⁸²¹⁷¹ is an apocalyptic number.

82171 is the 166-th hex number.

82171 is a deficient number, since it is larger than the sum of its proper divisors (1).

82171 is an equidigital number, since it uses as much as digits as its factorization.

82171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112, while the sum is 19.

The square root of 82171 is about 286.6548447175. The cubic root of 82171 is about 43.4749933342.

Adding to 82171 its reverse (17128), we get a palindrome (99299).

It can be divided in two parts, 82 and 171, that added together give a triangular number (253 = T₂₂).

The spelling of 82171 in words is "eighty-two thousand, one hundred seventy-one".