82811147 has 2 divisors, whose sum is σ = 82811148. Its totient is φ = 82811146.

The previous prime is 82811119. The next prime is 82811149. The reversal of 82811147 is 74111828.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82811147 is a prime.

Together with 82811149, 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 (82811149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41405573 + 41405574.

It is an arithmetic number, because the mean of its divisors is an integer number (41405574).

Almost surely, 2^82811147 is an apocalyptic number.

82811147 is a deficient number, since it is larger than the sum of its proper divisors (1).

82811147 is an equidigital number, since it uses as much as digits as its factorization.

82811147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3584, while the sum is 32.

The square root of 82811147 is about 9100.0630217598. The cubic root of 82811147 is about 435.8759764934.

The spelling of 82811147 in words is "eighty-two million, eight hundred eleven thousand, one hundred forty-seven".