82722247 has 2 divisors, whose sum is σ = 82722248. Its totient is φ = 82722246.

The previous prime is 82722217. The next prime is 82722251. The reversal of 82722247 is 74222728.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82722247 - 2¹⁹ = 82197959 is a prime.

It is equal to p_4819039 and since 82722247 and 4819039 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82722217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41361123 + 41361124.

It is an arithmetic number, because the mean of its divisors is an integer number (41361124).

Almost surely, 2^82722247 is an apocalyptic number.

82722247 is a deficient number, since it is larger than the sum of its proper divisors (1).

82722247 is an equidigital number, since it uses as much as digits as its factorization.

82722247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25088, while the sum is 34.

The square root of 82722247 is about 9095.1771285665. The cubic root of 82722247 is about 435.7199457731.

The spelling of 82722247 in words is "eighty-two million, seven hundred twenty-two thousand, two hundred forty-seven".