2001
Everything about the number 2001 — its names, how to write it in other bases and numeral systems, and what makes it interesting mathematically.
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Names of 2001
| Nominal | 2001 |
| Cardinal | two thousand one |
| Ordinal | 2,001st |
| This number as US currency | two thousand one dollars |
Properties (and some facts) of 2001
| Is 2001 an odd number? | 2001 is an odd number |
| Is 2001 an even number? | 2001 is not an even number |
| Is 2001 a palindrome? | 2001 is not a palindrome |
| Is 2001 a triangle number? | 2001 is not a triangle number |
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2001 in other bases
| Base 2 (Binary) | 11111010001 |
| Base 3 (Ternary) | 2202010 |
| Base 4 (Quaternary) | 133101 |
| Base 5 (Quinary) | 31001 |
| Base 6 (Senary) | 13133 |
| Base 8 (Octal) | 3721 |
| Base 12 (Duodecimal) | 11A9 |
| Base 16 (Hexadecimal) | 7D1 |
| Base 20 (Vigesimal) | 501 |
Primes and factors tests for 2001
| Is 2001 a prime number? | 2001 is not a prime number |
| Is 2001 a perfect number? | 2001 is not a perfect number |
| Is 2001 a Mersenne prime? | 2001 is not a Mersenne prime |
| Is 2001 a Fermat prime? | 2001 is not a Fermat prime |
| Is 2001 a Fibonacci prime? | 2001 is not a Fibonacci prime |
| Is 2001 a partition prime? | 2001 is not a partition prime |
| Is 2001 a Pell prime? | 2001 is not a Pell prime |
| Prime Factors | Prime factors of 2001 |
2001 in other numeral systems
| 2001 in Roman numerals | MMI |
| 2001 in Chinese numerals | 貳仟壹 |
| 2001 in Babylonian numerals |   |
| 2001 in Egyptian numerals | 𓆽𓏺 |
Roots and squares for 2001
| Is 2001 a square number? | 2001 is not a square number |
| Is 2001 a cube number? | 2001 is not a cube number |
| Square root of 2001 | 44.73253849269 |
| Cube root of 2001 | 12.601310017484 |
Recreational math for 2001
| Number 2001 reversed | 1002 |
| Sum of the digits | 3 |
| Number of digits | 4 |
Arithmetic tables for 2001
Other pages about 2001
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