The Number

505

Five Hundred and Five

Nearby Numbers

Positive, nonzero integers within three units

502
Five Hundred and Two
503
Five Hundred and Three
504
Five Hundred and Four
506
Five Hundred and Six
507
Five Hundred and Seven
508
Five Hundred and Eight

Scientific Notation

Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.

5.05e2

Reciprocal

A number multiplied with its reciprocal is one.

0.0019801980198019802

The reciprocal of 505.

Palindrome?

A numerical palindrome has the same value when all of its digits are reversed.

The number 505 is a palindrome.

Not A Prime Number

A prime number is a positive integer that is divisible only by itself and one.

Five hundred and five is a composite number with 4 total factors (including 1 and itself).   See primes in Base 10 Decimal

A Composite

Composites have more than just these two factors.

Five hundred and five is a composite number with 4 total factors (including 1 and itself).

Prime Factors

The prime factors of a positive integer are the integers that divide it exactly and are also prime.

The number five hundred and five has the following 2 prime factors:

5
Five
101
One Hundred and One

Prime Factorization

The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities

51 · 1011 = 505

Base Conversions

The number five hundred and five in 35 different bases