Digit sum

Noun

Word Frequency: 0.0

Definitions

1.NounThe sum of all digits.

"The digit sum of 517 is 5 + 1 + 7 = 13."

2.Nounthe number obtained when repeatedly applying above described operation until arriving at a single-digit number.

"The digit sum of 517 is 4, since 5 + 1 + 7 = 13 and 1 + 3 = 4."

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