82111259 has 2 divisors, whose sum is σ = 82111260. Its totient is φ = 82111258.

The previous prime is 82111231. The next prime is 82111261. The reversal of 82111259 is 95211128.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82111259 is a prime.

It is a Sophie Germain prime.

Together with 82111261, 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 (82111279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41055629 + 41055630.

It is an arithmetic number, because the mean of its divisors is an integer number (41055630).

Almost surely, 2^82111259 is an apocalyptic number.

82111259 is a deficient number, since it is larger than the sum of its proper divisors (1).

82111259 is an equidigital number, since it uses as much as digits as its factorization.

82111259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 29.

The square root of 82111259 is about 9061.5263063129. The cubic root of 82111259 is about 434.6445486658.

The spelling of 82111259 in words is "eighty-two million, one hundred eleven thousand, two hundred fifty-nine".