82821227 has 2 divisors, whose sum is σ = 82821228. Its totient is φ = 82821226.

The previous prime is 82821223. The next prime is 82821239. The reversal of 82821227 is 72212828.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82821227 - 2² = 82821223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82821193 and 82821202.

It is not a weakly prime, because it can be changed into another prime (82821223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41410613 + 41410614.

It is an arithmetic number, because the mean of its divisors is an integer number (41410614).

Almost surely, 2^82821227 is an apocalyptic number.

82821227 is a deficient number, since it is larger than the sum of its proper divisors (1).

82821227 is an equidigital number, since it uses as much as digits as its factorization.

82821227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7168, while the sum is 32.

The square root of 82821227 is about 9100.6168472252. The cubic root of 82821227 is about 435.8936611158.

The spelling of 82821227 in words is "eighty-two million, eight hundred twenty-one thousand, two hundred twenty-seven".