200543 has 4 divisors (see below), whose sum is σ = 229200. Its totient is φ = 171888.

The previous prime is 200513. The next prime is 200569. The reversal of 200543 is 345002.

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 200543 - 2¹⁶ = 135007 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 (200513) 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, 14318 + ... + 14331.

It is an arithmetic number, because the mean of its divisors is an integer number (57300).

2²⁰⁰⁵⁴³ is an apocalyptic number.

200543 is a deficient number, since it is larger than the sum of its proper divisors (28657).

200543 is an equidigital number, since it uses as much as digits as its factorization.

200543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28656.

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 200543 is about 447.8202764503. The cubic root of 200543 is about 58.5332316606.

Adding to 200543 its reverse (345002), we get a palindrome (545545).

It can be divided in two parts, 2005 and 43, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 200543 in words is "two hundred thousand, five hundred forty-three".