The number 1441
1441 is a palindrome: it reads 1441 backwards too. Its prime factorisation is 11 × 131. Divisors (4): 1, 11, 131, 1441.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 1441: a palindrome: it reads 1441 backwards too; a semiprime: 11 × 131, the product of two primes.
- 2
1441 is composite. Its prime factorisation is
- 3
The divisors add up to 1584; without 1441 itself that is 143, so 1441 is deficient (143 is less than 1441). Euler's totient φ(1441) = 1300 numbers up to 1441 share no factor with it.
- 4
The digits of 1441 add up to 10, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 140 steps to reach 1.
LaTeX source of the formulas on this page
\[ 1441 = 11 \times 131 \]
1441 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 1584 |
| Euler totient φ(n) | 1300 |
| Square | 2076481 |
| Cube | 2992209121 |
| Square root | 37.960506 |
| Digit sum / digital root | 10 / 1 |
| Collatz steps to 1 | 140 |
| Scientific notation | 1.441 × |
1441 in other forms
| Form | Value |
|---|---|
| In words | one thousand four hundred and forty-one |
| Roman numerals | MCDXLI |
| Binary (base 2) | 10110100001 |
| Octal (base 8) | 2641 |
| Hexadecimal (base 16) | 5A1 |
| Base 3 | 1222101 |
| As time | 1441 seconds = 24 min 1 s |
Is 1441 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 1) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 1) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 6) | A number is divisible by 7 if double the last digit and subtract it from the rest: the result is a multiple of 7. |
| 8 | No (remainder 1) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 1) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 1) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (1441 ÷ 11 = 131) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 1) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 1441 a prime number?
No. 1441 = 11 × 131, so it is divisible by 11.
What are the factors of 1441?
1, 11, 131, 1441.
What is 1441 in binary?
10110100001 (hexadecimal 5A1, octal 2641).
What is the square root of 1441?
About 37.9605.
What is 1441 in Roman numerals?
MCDXLI.
Is 1441 divisible by 3?
No. Its digits add up to 10, which is not a multiple of 3.
What is special about the number 1441?
1441 is a palindrome: it reads 1441 backwards too; a semiprime: 11 × 131, the product of two primes.