555 (number)
Encyclopedia : 5 : 55 : 555 : 555 (number)
555 is the natural number following 554 and preceding 556.
| |||
| 555 | |||
|---|---|---|---|
| Cardinal | Five hundred [and] fifty-five | ||
| Ordinal | 555th | ||
| Factorization | [3 \cdot 5 \cdot 37] | ||
| Roman numeral | DLV | ||
| Binary | 1000101011 | ||
| Hexadecimal | 22B | ||
Mathematical properties
It is a sphenic number.In base 10, it is a repdigit, and because it is divisible by the sum of its digits, it is a Harshad number. It also a Harshad number in binary, base 11, base 13 and hexadecimal.
Other fields
Five hundred [and] fifty five is:- The telephone exchange for fictitious phone numbers in US movies - see 555 telephone number and North American Numbering Plan.
- A tongue twister in German. Try saying Fünfhundertfünfundfünfzig three times fast.
- The number of keyboard sonatas written by Domenico Scarlatti, according to the catalog by Ralph Kirkpatrick.
- The model number of the 555 timer IC, a classic integrated circuit (chip) implementing a variety of timer and multivibrator applications, and historically widely used in electronics.
- The years AD 555 and 555 BC.
- The Thai version of lol in a text conversation. "5" in Thai is pronounced "ha," so three of them would be "hahaha."
- The approximate height of the Washington Monument in feet.
- The holy number of the Christmas Chaos Cult
- Adolph Hitler's Nazi registration number. He was actually the 55th member, as the founders began registering with 500 to make it appear as if there were many more people in the party ranks than there actually were.
External links
- [555-LIST] list of fictional phone numbers
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