208543 has 4 divisors (see below), whose sum is σ = 210600. Its totient is φ = 206488.

The previous prime is 208529. The next prime is 208553. The reversal of 208543 is 345802.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 208543 - 2⁵ = 208511 is a prime.

It is a Duffinian number.

208543 is a lucky number.

It is a plaindrome in base 14.

It is a zygodrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 868 + ... + 1081.

It is an arithmetic number, because the mean of its divisors is an integer number (52650).

2²⁰⁸⁵⁴³ is an apocalyptic number.

208543 is a deficient number, since it is larger than the sum of its proper divisors (2057).

208543 is a wasteful number, since it uses less digits than its factorization.

208543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2056.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 208543 is about 456.6650851554. The cubic root of 208543 is about 59.3014353928.

The spelling of 208543 in words is "two hundred eight thousand, five hundred forty-three".