0558

0558 is a four-digit numeric string that can serve as a decimal representation of the integer 558, as well as a code or identifier in catalogs, part numbers, or file names. In plain decimal arithmetic, its value is 558.

Mathematically, 558 factors as 2 × 3^2 × 31, so it is a composite number. It is divisible by 2, 3, 6, 9, 18, 31, 62, 93, 186, and 558. In different numeral systems, 558 is represented as 558 in decimal, 0x22E in hexadecimal, 1056 in octal, and 1000101110 in binary. In Roman numerals, 558 is DLVIII.

In contexts such as computing and data management, 0558 may be used as a padded identifier or a part number. Leading zeros can carry meaning in some systems (for example, to indicate fixed-width formatting or to distinguish identifiers from plain numbers). In programming languages that interpret a leading zero as an octal literal, 0558 would be invalid because the octal system does not use the digit 8; some languages instead treat such literals as errors or as decimal values depending on the syntax.

Historically, 0558 can denote a year when dated references appear, such as the year 558 CE in historical chronology. In Roman numerals, it corresponds to DLVIII, and in standard mathematical notation, it denotes the same integer as 558.

Overall, 0558 is primarily a numeric string with multiple representation and usage patterns, rather than a single universally recognized item.