82543243 has 2 divisors, whose sum is σ = 82543244. Its totient is φ = 82543242.

The previous prime is 82543213. The next prime is 82543247. The reversal of 82543243 is 34234528.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82543243 - 2⁹ = 82542731 is a prime.

It is not a weakly prime, because it can be changed into another prime (82543247) 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, 41271621 + 41271622.

It is an arithmetic number, because the mean of its divisors is an integer number (41271622).

Almost surely, 2^82543243 is an apocalyptic number.

82543243 is a deficient number, since it is larger than the sum of its proper divisors (1).

82543243 is an equidigital number, since it uses as much as digits as its factorization.

82543243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 31.

The square root of 82543243 is about 9085.3311992464. The cubic root of 82543243 is about 435.4054316716.

The spelling of 82543243 in words is "eighty-two million, five hundred forty-three thousand, two hundred forty-three".