5 . 5 (five) is a number, numeral and digit. It is the natural number, and cardinal number, following 4 and preceding 6, and is a prime number. Humans, and many other animals, have 5 digits on their limbs.
Oct 31, 2025 · A West Arabic numeral, ultimately from Indic numerals (compare Devanagari ५ (5)). See 5 § Evolution of the Arabic digit for more.
Your guide to the number 5, an odd number which is prime. Mathematical info, prime factorization, fun facts and numerical data for STEM, education and fun.
Properties of 5: prime decomposition, primality test, divisors, arithmetic properties, and conversion in binary, octal, hexadecimal, etc.