451 (number)
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451 (Four hundred and fifty-one) is the natural number following 450 and preceding 452.
| 451 | |
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| Cardinal | Four hundred and fifty-one |
| Ordinal | Four hundred and fifty-first |
| Factorization | <math>11 \cdot 41<math> |
| Roman numeral | CDLI |
| Binary | 111000011 |
| Hexadecimal | 1C3 |
It is a Wedderburn-Etherington number. It is a decagonal number and a centered decagonal number. Its reciprocal has period 10. 451 is the smallest number with this period reciprocal length. There are 451 partitions of 36 into parts having a common factor.
451 figures in sequences for making change. There are 451 ways to make change for 50 cents with coins of 1, 2, 5, 10, 20 and 50 cents, and 451 ways to make change for 49 Euro cents.
Four hundred fifty-one is:
- An SMTP code meaning that the requested action was aborted because of a local processing error
- In Fahrenheit, the ignition temperature of paper. Therefore, Ray Bradbury titled his dystopian novel about book burnings Fahrenheit 451.
- The year AD 451.