82543943 has 2 divisors, whose sum is σ = 82543944. Its totient is φ = 82543942.

The previous prime is 82543927. The next prime is 82543991. The reversal of 82543943 is 34934528.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82543943 - 2⁴ = 82543927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82543897 and 82543906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82543913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41271971 + 41271972.

It is an arithmetic number, because the mean of its divisors is an integer number (41271972).

Almost surely, 2^82543943 is an apocalyptic number.

82543943 is a deficient number, since it is larger than the sum of its proper divisors (1).

82543943 is an equidigital number, since it uses as much as digits as its factorization.

82543943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 38.

The square root of 82543943 is about 9085.3697228016. The cubic root of 82543943 is about 435.4066624727.

The spelling of 82543943 in words is "eighty-two million, five hundred forty-three thousand, nine hundred forty-three".