056

056 is a three-digit string that can denote different things depending on context. In ordinary decimal notation, 056 represents the number 56. The leading zero is often used for padding to a fixed width in data formats, identifiers, or display conventions.

In computing and data representation, a leading zero can carry signification that depends on the language or system. In some historical programming contexts, numbers starting with a zero indicate octal notation, in which 056 would be interpreted as octal and equal to decimal 46. Many modern languages prefer explicit notations for octal (or disallow leading-zero octals), so the exact interpretation of 056 is language-dependent.

Beyond numeric value, 056 frequently appears as an identifier in catalogs, product models, serial numbers, or part numbers. It can also designate a route or service number in transportation timetables or be used as a code within internal organizational schemes. In data processing, 056 may appear in year fields with padding (for example as 056 in datasets that store years stylized with three digits).

Because 056 is not tied to a single standard meaning, its interpretation relies on the surrounding context and the conventions of the system in which it appears.

See also: 56 (number); Leading zeros; Octal numeral system; Catalog numbering.