### 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 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.

`[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