47
Everything about the number 47 — its names, how to write it in other bases and numeral systems, and what makes it interesting mathematically.
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Names of 47
| Nominal | 47 |
| Cardinal | forty-seven |
| Ordinal | 47th |
| This number as US currency | forty-seven dollars |
Properties (and some facts) of 47
| Is 47 an odd number? | 47 is an odd number |
| Is 47 an even number? | 47 is not an even number |
| Is 47 a palindrome? | 47 is not a palindrome |
| Is 47 a triangle number? | 47 is not a triangle number |
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47 in other bases
| Base 2 (Binary) | 101111 |
| Base 3 (Ternary) | 1202 |
| Base 4 (Quaternary) | 233 |
| Base 5 (Quinary) | 142 |
| Base 6 (Senary) | 115 |
| Base 8 (Octal) | 57 |
| Base 12 (Duodecimal) | 3B |
| Base 16 (Hexadecimal) | 2F |
| Base 20 (Vigesimal) | 27 |
Primes and factors tests for 47
| Is 47 a prime number? | 47 is a prime number |
| Is 47 a perfect number? | 47 is not a perfect number |
| Is 47 a Mersenne prime? | 47 is not a Mersenne prime |
| Is 47 a Fermat prime? | 47 is not a Fermat prime |
| Is 47 a Fibonacci prime? | 47 is not a Fibonacci prime |
| Is 47 a partition prime? | 47 is not a partition prime |
| Is 47 a Pell prime? | 47 is not a Pell prime |
| Prime Factors | Prime factors of 47 |
47 in other numeral systems
| 47 in Roman numerals | XLVII |
| 47 in Chinese numerals | 肆拾柒 |
| 47 in Babylonian numerals |  |
| 47 in Egyptian numerals | 𓎉𓐀 |
Roots and squares for 47
| Is 47 a square number? | 47 is not a square number |
| Is 47 a cube number? | 47 is not a cube number |
| Square root of 47 | 6.855654600401 |
| Cube root of 47 | 3.6088260801387 |
Recreational math for 47
| Number 47 reversed | 74 |
| Sum of the digits | 11 |
| Number of digits | 2 |
Arithmetic tables for 47
Other pages about 47
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