80543 has 4 divisors (see below), whose sum is σ = 81120. Its totient is φ = 79968.

The previous prime is 80537. The next prime is 80557. The reversal of 80543 is 34508.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 80543 - 2⁴ = 80527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71 + ... + 407.

It is an arithmetic number, because the mean of its divisors is an integer number (20280).

2⁸⁰⁵⁴³ is an apocalyptic number.

80543 is a deficient number, since it is larger than the sum of its proper divisors (577).

80543 is a wasteful number, since it uses less digits than its factorization.

80543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 80543 is about 283.8009866086. The cubic root of 80543 is about 43.1859622314.

It can be divided in two parts, 805 and 43, that added together give a palindrome (848).

The spelling of 80543 in words is "eighty thousand, five hundred forty-three".