On 21 December 2008, MathBabbler posted BAB# 1975. During early June of 1975, MathBabbler graduated from South Milwaukee Senior High School and during the fall of 1975 (at the age of 18) he became a freshman at UW-Whitewater.

MathBabbler Number Analyst (MBNA) output: ========================================= 1975 is a natural, whole, integer 1975 is odd 1975 proper divisors are: 1,5,25,79,395, 1975 is deficient (sum of divisors is 505) 1975 is unhappy 1975 is not a Harshad number 1975 is not prime 1975 has the prime factors: 5*5*79 1975 in octal is 03667 1975 in hexadecimal is 0x7b7 1975 in binary is 11110110111 (is odious) 1975 nearest square numbers: -39...50 (1936...2025 [45]) sqrt(1975) = 44.441 ln(1975) = 7.58832 log(1975) = 3.29557 1975 reciprocal is .00050632911392405063291139240506 1975! is inf 1975 is 628.662 Pi years 1975 is 98 score and 15 years

`written as a Roman numeral is`

1975`.`

MCMLXXVIf the digits 7 and 5 in

`are swapped, then the resulting number (1957) is MathBabbler's birthyear.`

1975

**Creator:** Gerald Thurman
[gthurman@gmail.com]

**Created:** 21 December 2008

This work is licensed under a Creative Commons Attribution 3.0 United States License.