559

559 is a natural number that follows 558 and precedes 560. It is an odd composite number, with prime factorization 13 × 43, which makes it a semiprime. The divisors of 559 are 1, 13, 43, and 559. Its Euler totient is 504.

In representations, 559 is written as 559 in decimal, 1000101111 in binary, 1057 in octal, and 0x22F in hexadecimal. In Roman numerals it is DLIX.

559 is used in various practical contexts. In North American telephony, 559 is an area code serving central California, including Fresno, Clovis, and surrounding communities. The 559 area code was created in 1997 as a split from 209.

As a year, 559 CE appears in historical chronology. It falls within the reign of the Byzantine emperor Justinian I, a period marked by ongoing political and military developments in the eastern Mediterranean.