The Natural Number 561

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Properties of the Number 561

  • Because 561 is not divisible by 2 ...
    • 561 is an odd number
    • 561 has parity 1
    • 561 is not an even number
  • Because 561 can be factored as 3 x 187 ...
    • 561 is a composite number
    • 561 is not a prime number

Alternative Representations of the Number 561

  • Base 2 (binary): 1000110001
  • Base 8 (octal): 1061
  • Base 16 (hexadecimal): 231
  • Roman numeral: DLXI
  • Words: five hundred sixty-one

Divisors of the Number 561

  • 561 has 8 positive divisors: 1, 3, 11, 17, 33, 51, 187, 561
    • The sum of the positive divisors is 864
  • 561 has 7 proper divisors: 1, 3, 11, 17, 33, 51, 187
    • The sum of the proper divisors is 303
  • 561 is a deficient number since the sum of the proper divisors is less than 561
  • 561 is not a perfect number
  • 561 is not an abundant number

More Properties of the Number 561

  • 561 is not a square number
  • 561 is not a cube number
  • 561 is not a palindromic number
  • 561 is not a Fibonacci number
  • 561 is not a Lucas number

4:17 am, Thursday, March 23, 2017 (UTC; +0000)
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