About the Number 55 (fifty-five)

MathBabbler wanted to create a nBAB but he didn't know what number to use; therefore, he decided to create a nBAB for a number in the Fibonacci sequence. He had nBABs for 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, but he didn't have a nBAB for 55.

   MathBabbler Number Analyst (MBNA) output:
   =========================================
   55 is a natural, whole, integer
   55 is odd
   55 proper divisors are: 1,5,11,
   55 is deficient (sum of divisors is 17)
   55 is unhappy
   55 is not a Harshad number
   55 is not prime
   55 is undulating
   55 has the prime factors: 5*11
   55 is semiprime (biprime or 2-almost prime)
   55 is a Fibonacci number
   55 in octal is 067
   55 in hexadecimal is 0x37
   55 in binary is 110111 (is odious)
   55 nearest square numbers: -6...9 (49...64 [8])
   sqrt(55) = 7.4162
   ln(55) = 4.00733
   log(55) = 1.74036
   55 reciprocal is .01818181818181818181818181818181
   55! is 1.26964e+73
   55 is 17.507 Pi years
   55 is 2 score and 15 years
   55 written as a Roman numeral is LV

[Wikipedia] 55 "has the interesting property that it is the 10th Fibonacci number and the sum of the numbers 1 to 10."

MathBabbler grew up close to I-55 in Illinois.

BARS::I-55 Milepost in Missouri

BARS::I-55 and IL Hwy-53 in Bolingbrook, Illinois

[Wikipedia] 55 is a Kaprekar number. MathBabbler first documented Kaprekar numbers twelve days prior to the creation of this nBAB when he created nBAB::About the Number 99.

   55^2 = 3025
   3025 split into two parts  30|25
   sum the parts:  30 + 25 = 55
   
   55 is a Kaprekar number...

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 25 March 2009

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