204046543 has 4 divisors (see below), whose sum is σ = 204214608. Its totient is φ = 203878480.

The previous prime is 204046519. The next prime is 204046553. The reversal of 204046543 is 345640402.

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 204046543 - 2¹⁷ = 203915471 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 (204046553) 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, 82198 + ... + 84643.

It is an arithmetic number, because the mean of its divisors is an integer number (51053652).

Almost surely, 2^204046543 is an apocalyptic number.

204046543 is a deficient number, since it is larger than the sum of its proper divisors (168065).

204046543 is a wasteful number, since it uses less digits than its factorization.

204046543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168064.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 204046543 is about 14284.4860950613. The cubic root of 204046543 is about 588.7212975190.

Adding to 204046543 its reverse (345640402), we get a palindrome (549686945).

The spelling of 204046543 in words is "two hundred four million, forty-six thousand, five hundred forty-three".