### About the Number 455 (four hundred fifty-five)

Compufoo wanted a base-10 number to convert to base-2, so he picked the classroom number (CM-454). Compufoo mentioned that it was cool having a palindromic number classroom. 454 in binary is 1110001102. A student noticed that if the left-most binary digit was a one, then the binary number would be palindromic. They were right! 1110001112 equals 455.

```MathBabbler Number Analyst (MBNA) output:
=========================================
455 is natural, counting, whole, integer
455 is odd (not even)
455 is not extremely odd
455 proper divisors are: 1,5,7,13,35,65,91,
455 has 7 proper divisors
455 is deficient (sum of divisors is 217; ratio: 0.476923)
455 is unhappy
455 is a Squarefree Number
455 is composite (not prime)
455 has the prime factors: 5*7*13 (sum=25)
455 is sphenic (has 3 unique prime factors)
455 is a 13-smooth number
455 is Arithmetic (A003601)
455 in octal is 0707
455 in binary is 111000111 (is evil)(is palindromic)
455 nearest square numbers: -14...29 (441...484 [22])
sqrt(455) = 21.3307
ln(455) = 6.1203
log(455) = 2.65801
455! is 3.30652e+1013
455 is 144.831 Pi years
455 is 22 score and 15 years
455 written as a Roman numeral is CDLV
455 is 228^2 - 227^2 and 228 + 227 = 455
455 is a multiple of 5 & it contains a 5 (A121025)
______
455 reciprocal is 0.0021978
remainders:
1,10,100,90,445,355,365,10
```

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 05 October 2016