🌐EnglishEnglishDeutschFrançaisItalianoPortuguêsالعربية한국어中文日本語EntityQ2532474· pop 15· linked from 227 articlesdigital rootAlso known as repeated digital sumrepeated digital sumAvailable in 15 languagesFrançais中文日本語PortuguêsItalianoالعربيةCzechEsperantoGreekHebrewRomanianConnectionsprime numberEntityfigurate numberEntityCategoriesAlgebraArithmetic dynamicsBase-dependent integer sequencesNumber theory