82775219 has 2 divisors, whose sum is σ = 82775220. Its totient is φ = 82775218.

The previous prime is 82775201. The next prime is 82775221. The reversal of 82775219 is 91257728.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82775219 - 2²⁴ = 65998003 is a prime.

It is a super-2 number, since 2×82775219² = 13703473760995922, which contains 22 as substring.

Together with 82775221, 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 (82775299) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41387609 + 41387610.

It is an arithmetic number, because the mean of its divisors is an integer number (41387610).

Almost surely, 2^82775219 is an apocalyptic number.

82775219 is a deficient number, since it is larger than the sum of its proper divisors (1).

82775219 is an equidigital number, since it uses as much as digits as its factorization.

82775219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 41.

The square root of 82775219 is about 9098.0887553376. The cubic root of 82775219 is about 435.8129317708.

The spelling of 82775219 in words is "eighty-two million, seven hundred seventy-five thousand, two hundred nineteen".