The number 1477
1477 is a composite number with 4 divisors. Its prime factorisation is 7 × 211. Divisors (4): 1, 7, 211, 1477.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 1477: a semiprime: 7 × 211, the product of two primes.
- 2
1477 is composite. Its prime factorisation is
- 3
The divisors add up to 1696; without 1477 itself that is 219, so 1477 is deficient (219 is less than 1477). Euler's totient φ(1477) = 1260 numbers up to 1477 share no factor with it.
- 4
The digits of 1477 add up to 19, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 21 steps to reach 1.
LaTeX source of the formulas on this page
\[ 1477 = 7 \times 211 \]
1477 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 1696 |
| Euler totient φ(n) | 1260 |
| Square | 2181529 |
| Cube | 3222118333 |
| Square root | 38.431758 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 21 |
| Scientific notation | 1.477 × |
1477 in other forms
| Form | Value |
|---|---|
| In words | one thousand four hundred and seventy-seven |
| Roman numerals | MCDLXXVII |
| Binary (base 2) | 10111000101 |
| Octal (base 8) | 2705 |
| Hexadecimal (base 16) | 5C5 |
| Base 3 | 2000201 |
| As time | 1477 seconds = 24 min 37 s |
Is 1477 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 2) | 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 | Yes (1477 ÷ 7 = 211) | 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 5) | 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 7) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 3) | 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 1477 a prime number?
No. 1477 = 7 × 211, so it is divisible by 7.
What are the factors of 1477?
1, 7, 211, 1477.
What is 1477 in binary?
10111000101 (hexadecimal 5C5, octal 2705).
What is the square root of 1477?
About 38.4318.
What is 1477 in Roman numerals?
MCDLXXVII.
Is 1477 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 1477?
1477 is a semiprime: 7 × 211, the product of two primes.