Q: What is the digital root of 100,521,355

 A: 4

Why is 4 the digital root of the number 100,521,355?

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.

How do you calculate the digital root of 100,521,355?


Split the number up and add each digit together:


1 + 0 + 0 + 5 + 2 + 1 + 3 + 5 + 5 = 22

If the answer is more than one digit, you would add each digit of the answer together again:

2 + 2 = 4

What is the digital root of number 100,521,355?

Answer: 4


More Examples

Number 100,521,353100,521,354100,521,356100,521,357
Digital Root 2356

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