Thirty-three
33 is the natural number following 32 and preceding 34.
In mathematics
33 is the smallest integer that can not be expressed as a sum of different triangular numbers. It is also the smallest odd repdigit that's not prime (unless we consider 1-digit integers to also be repdigits).
In other fields
Thirty-three is also:
- The atomic number of arsenic.
- In reference to gramophone records, 33 refers to a type of record by its revolution speed of 33 1/3 revolutions per minute. 33s are also known as long playing records, or LPs. See: 78 and 45.
- A highly significant number to the Freemasons, and is one of their sacred numbers, recurring profusely throughout their 'Dogma' (as Albert Pike calls it), rituals and other miscellaneous places. Wherever you see a 33 in an inappropriate or peculiar place, chances are a Freemason or a member of a related group is responsible.
- A significant number in modern numerology, as it is one of the master numbers along with 11 and 22.
- A song by the Smashing Pumpkins on their Mellon Collie and the Infinite Sadness album.
- In Spanish, the "smile to the camera" word, as is "cheese" in English. Diga treinta y tres, is the same as "say cheese".
- The code for international direct dial phone calls to France.
- Historical years: 33 A.D., 33 B.C., or 1933
- A normal human spine has 33 vertebrae.
