204220543 has 2 divisors, whose sum is σ = 204220544. Its totient is φ = 204220542.

The previous prime is 204220537. The next prime is 204220561. The reversal of 204220543 is 345022402.

204220543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204220543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204220573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102110271 + 102110272.

It is an arithmetic number, because the mean of its divisors is an integer number (102110272).

Almost surely, 2^204220543 is an apocalyptic number.

204220543 is a deficient number, since it is larger than the sum of its proper divisors (1).

204220543 is an equidigital number, since it uses as much as digits as its factorization.

204220543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 204220543 is about 14290.5753208190. The cubic root of 204220543 is about 588.8885933400. Note that the first 3 decimals are identical.

Adding to 204220543 its reverse (345022402), we get a palindrome (549242945).

The spelling of 204220543 in words is "two hundred four million, two hundred twenty thousand, five hundred forty-three".