82004771 has 2 divisors, whose sum is σ = 82004772. Its totient is φ = 82004770.

The previous prime is 82004759. The next prime is 82004773. The reversal of 82004771 is 17740028.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82004771 is a prime.

Together with 82004773, 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 (82004773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41002385 + 41002386.

It is an arithmetic number, because the mean of its divisors is an integer number (41002386).

Almost surely, 2^82004771 is an apocalyptic number.

82004771 is a deficient number, since it is larger than the sum of its proper divisors (1).

82004771 is an equidigital number, since it uses as much as digits as its factorization.

82004771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 82004771 is about 9055.6485687111. The cubic root of 82004771 is about 434.4565742351.

Adding to 82004771 its reverse (17740028), we get a palindrome (99744799).

The spelling of 82004771 in words is "eighty-two million, four thousand, seven hundred seventy-one".