165 (number)
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165 is the natural number following 164 and preceding 166.
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| Cardinal | One hundred [and] sixty-five |
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| Ordinal | 165th | ||
| Factorization |  |
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| Divisors | 1, 3, 5, 11, 33, 55, 165 | ||
| Roman numeral | CLXV | ||
| Binary | 10100101 | ||
| Hexadecimal | A5 | ||
| Octal | 245 | ||
165 is a sphenic number, a tetrahedral number, and the sum of the sums of divisors of the first fourteen integers.
In base 10, it is a self number.
It is a binary palindromic number (10100101).
See also the year AD 165 or 165 BC.
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