# 495 (number)

 ← 494 495 496 →
Cardinalfour hundred ninety-five
Ordinal495th
(four hundred ninety-fifth)
Factorization32 × 5 × 11
Greek numeralΥϞΕ´
Roman numeralCDXCV
Binary1111011112
Ternary2001003
Quaternary132334
Quinary34405
Senary21436
Octal7578
Duodecimal35312
Vigesimal14F20
Base 36DR36

495 (four hundred [and] ninety-five) is the natural number following 494 and preceding 496. It is a pentatope number[1] (and so a binomial coefficient ${\displaystyle {\tbinom {12}{4}}}$).

## Kaprekar transformation

The Kaprekar's routine algorithm is defined as follows for three-digit numbers:

Repeating this process will always reach 495 in a few steps. Once 495 is reached, the process stops because 954 – 459 = 495.

### Example

For example, choose 495:

495

The only three-digit numbers for which this function does not work are repdigits such as 111, which give the answer 0 after a single iteration. All other three-digits numbers work if leading zeros are used to keep the number of digits at 3:

211 – 112 = 099
990 – 099 = 891 (rather than 99 - 99 = 0)
981 – 189 = 792
972 – 279 = 693
963 – 369 = 594
954 − 459 = 495

The number 6174 has the same property for the four-digit numbers.