EntityQ2313686· pop 16· linked from 232 articlesautomorphic numberSign in to savea natural number whose square "ends" in the same digits as the number itselfConnectionsprime numberEntityp-adic numberEntityfigurate numberEntitymathematicsEntitynatural numberEntitybinary numeral systemEntitydigitEntityexponentiationEntitydecimalEntitynumeral systemEntitypolynomialEntityOxford English DictionaryEntitythree-dimensional spaceEntityringEntitynatural languageEntityperfect numberEntitydivisorEntityrecursionEntitypermutationEntitysquareEntityCategoriesArithmetic dynamicsBase-dependent integer sequencesMathematical analysisModular arithmeticNumber theoryP-adic numbersRing theory