82111147 has 2 divisors, whose sum is σ = 82111148. Its totient is φ = 82111146.

The previous prime is 82111109. The next prime is 82111171. The reversal of 82111147 is 74111128.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82111147 - 2¹⁵ = 82078379 is a prime.

It is not a weakly prime, because it can be changed into another prime (82111187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41055573 + 41055574.

It is an arithmetic number, because the mean of its divisors is an integer number (41055574).

Almost surely, 2^82111147 is an apocalyptic number.

82111147 is a deficient number, since it is larger than the sum of its proper divisors (1).

82111147 is an equidigital number, since it uses as much as digits as its factorization.

82111147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 448, while the sum is 25.

The square root of 82111147 is about 9061.5201263364. The cubic root of 82111147 is about 434.6443510469.

The spelling of 82111147 in words is "eighty-two million, one hundred eleven thousand, one hundred forty-seven".