555 (number)

In religion

Mathematical properties

Electronics

• 555 timer IC, a classic integrated circuit chip that has numerous timer and multivibrator applications, and historically widely used in electronics

  Other fields

• The years AD 555 and 555 BC.
• The telephone exchange for fictitious phone numbers in US movies and video games—see 555 and North American Numbering Plan.
• The number of keyboard sonatas written by Domenico Scarlatti, according to the catalog by Ralph Kirkpatrick.
• A musical piece by Frank Zappa. It refers to the time signature of the composition.
• The Thai version of lol in a text conversation. "5" in Thai is pronounced "ha", so three of them would be "hahaha." Also used by gamers.
• "5" in Mandarin Chinese is pronounced "wu" so three together would be "wuwuwu", which sounds somewhat like sobbing.
• The approximate height of the Washington Monument in feet.
• Adolf Hitler's membership number in the Deutsche Arbeiterpartei. He was the 55th member; the founders began the register with number 501, to make it appear that there were many more people in the party ranks than actually were members.
• The Greek gematrical equivalent to the word Necronomicon, according to Simon.
• Kamen Rider 555, a Japanese tokusatsu TV series, where "555" is read as "Φ's", "Phi's", or "Faiz".
• A common abbreviation of State Express 555, a cigarette brand owned by British American Tobacco.
• * State Express 555's sponsorship of motorsport lent the number as branding livery to racecars in Formula One and the World Rally Championship, most notably Subaru.
• is the second album by French musician and actress Charlotte Gainsbourg. "5:55" is also the first song on this album.
• Padova Rugby 555 ASD is an Italian non-professional rugby union team.
• The band Phish has a song called '555' on their album Fuego.
• American rapper XXXTentacion has a song called 'Floor 555' on his album, ?