82215347 has 2 divisors, whose sum is σ = 82215348. Its totient is φ = 82215346.

The previous prime is 82215323. The next prime is 82215403. The reversal of 82215347 is 74351228.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82215347 - 2¹⁶ = 82149811 is a prime.

It is not a weakly prime, because it can be changed into another prime (82215647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41107673 + 41107674.

It is an arithmetic number, because the mean of its divisors is an integer number (41107674).

Almost surely, 2^82215347 is an apocalyptic number.

82215347 is a deficient number, since it is larger than the sum of its proper divisors (1).

82215347 is an equidigital number, since it uses as much as digits as its factorization.

82215347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 32.

The square root of 82215347 is about 9067.2678906052. The cubic root of 82215347 is about 434.8281295743.

The spelling of 82215347 in words is "eighty-two million, two hundred fifteen thousand, three hundred forty-seven".