The number 51016
51016 is a composite number with 16 divisors. Its prime factorisation is × 7 × 911. Divisors (16): 1, 2, 4, 7, 8, 14, 28, 56, 911, 1822, 3644, 6377, 7288, 12754, 25508, 51016.
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How to work it out
- 1
51016 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
51016 is composite. Its prime factorisation is
- 3
The divisors add up to 109440; without 51016 itself that is 58424, so 51016 is abundant (58424 is more than 51016). Euler's totient φ(51016) = 21840 numbers up to 51016 share no factor with it.
- 4
The digits of 51016 add up to 13, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 83 steps to reach 1.
LaTeX source of the formulas on this page
\[ 51016 = 2^{3} \times 7 \times 911 \]51016 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 109440 |
| Euler totient φ(n) | 21840 |
| Square | 2602632256 |
| Cube | 132775887172096 |
| Square root | 225.867218 (= 2√12754) |
| Digit sum / digital root | 13 / 4 |
| Collatz steps to 1 | 83 |
| Scientific notation | 5.1016 × |
51016 in other forms
| Form | Value |
|---|---|
| In words | fifty-one thousand and sixteen |
| Binary (base 2) | 1100011101001000 |
| Octal (base 8) | 143510 |
| Hexadecimal (base 16) | C748 |
| Base 3 | 2120222111 |
| As time | 51016 seconds = 14 h 10 min 16 s |
Is 51016 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (51016 ÷ 2 = 25508) | 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 | Yes (51016 ÷ 4 = 12754) | 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 4) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | Yes (51016 ÷ 7 = 7288) | 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 | Yes (51016 ÷ 8 = 6377) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 4) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 6) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 9) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 4) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 51016 a prime number?
No. 51016 = × 7 × 911, so it is divisible by 2.
What are the factors of 51016?
1, 2, 4, 7, 8, 14, 28, 56, 911, 1822, 3644, 6377, 7288, 12754, 25508, 51016.
What is 51016 in binary?
1100011101001000 (hexadecimal C748, octal 143510).
What is the square root of 51016?
About 225.8672, exactly 2√12754.
Is 51016 divisible by 3?
No. Its digits add up to 13, which is not a multiple of 3.
What is special about the number 51016?
It is a composite number with 16 divisors.