82054171 has 2 divisors, whose sum is σ = 82054172. Its totient is φ = 82054170.

The previous prime is 82054157. The next prime is 82054187. The reversal of 82054171 is 17145028.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82054171 - 2⁵ = 82054139 is a prime.

It is not a weakly prime, because it can be changed into another prime (82054111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41027085 + 41027086.

It is an arithmetic number, because the mean of its divisors is an integer number (41027086).

Almost surely, 2^82054171 is an apocalyptic number.

82054171 is a deficient number, since it is larger than the sum of its proper divisors (1).

82054171 is an equidigital number, since it uses as much as digits as its factorization.

82054171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 82054171 is about 9058.3757374046. The cubic root of 82054171 is about 434.5437961789.

Adding to 82054171 its reverse (17145028), we get a palindrome (99199199).

The spelling of 82054171 in words is "eighty-two million, fifty-four thousand, one hundred seventy-one".