Q: What is the digital root of 21,510,001
A: 1
The digital root of a number is calculated by splitting the digits of a number and then adding them together. You keep splitting and adding the digits until you reach a single positive number.
Split the number up and add each digit together:
If the answer is more than one digit, you would add each digit of the answer together again:
What is the digital root of number 21,510,001?
Answer: 1
| Number | 21,509,999 | 21,510,000 | 21,510,002 | 21,510,003 |
| Digital Root | 8 | 9 | 2 | 3 |