5
Number 5 properties
- Prime
- Fibonacci
- Palindrome
- Harshad
- Armstrong
- Automorphic
- 5 is an odd number.
- 5 is a palindrome.
- 5 is a prime number, which means it is only divisible by 1 and itself.
- 5 is a Sophie Germain prime, which means that 2 x 5 + 1 = 11 is also a prime number.
- 5 is an Armstrong (or Narcissistic) number, which means it is the sum of its own digits each raised to the power of the number of digits.
- 5 is Fibonacci number #5.
- 5 is a Harshad number, which means it is divisible by the sum of its digits (5 = 5, and 5 is divisible by 5).
Prime factorization
Prime factorization of 5: 5.
Divisors
Divisor count: 2
1, 5
Factors of 5 are: 1, 5.
Representations
In octal, 5 is represented as 5.
In binary, 5 is represented as 101.
In hex, 5 is represented as 5.
Roman numeral: V
Curiosities
- 5 is part of the infinite sequence of prime numbers.
- 5 appears in the Fibonacci sequence, where each number is the sum of the previous two.
- 5 reads the same from left to right and right to left.
Related numbers
Nearby primes: 2, 3, 7, 11, 13
Quick answers
Is 5 prime?
Yes, 5 is prime.
What are the factors of 5?
1, 5
What is 5 in binary?
101