82891 has 2 divisors, whose sum is σ = 82892. Its totient is φ = 82890.

The previous prime is 82889. The next prime is 82903. The reversal of 82891 is 19828.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82891 - 2¹ = 82889 is a prime.

Together with 82889, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41445 + 41446.

It is an arithmetic number, because the mean of its divisors is an integer number (41446).

2⁸²⁸⁹¹ is an apocalyptic number.

82891 is a deficient number, since it is larger than the sum of its proper divisors (1).

82891 is an equidigital number, since it uses as much as digits as its factorization.

82891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 28.

The square root of 82891 is about 287.9079714075. The cubic root of 82891 is about 43.6016033414.

It can be divided in two parts, 828 and 91, that added together give a palindrome (919).

The spelling of 82891 in words is "eighty-two thousand, eight hundred ninety-one".