The Number

21541

Twenty-One Thousand Five Hundred and Forty-One

Nearby Numbers

Positive, nonzero integers within three units

21538
Twenty-One Thousand Five Hundred and Thirty-Eight
21539
Twenty-One Thousand Five Hundred and Thirty-Nine
21540
Twenty-One Thousand Five Hundred and Forty
21542
Twenty-One Thousand Five Hundred and Forty-Two
21543
Twenty-One Thousand Five Hundred and Forty-Three
21544
Twenty-One Thousand Five Hundred and Forty-Four

Scientific Notation

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

2.1541e4

Reciprocal

A number multiplied with its reciprocal is one.

0.00004642310013462699

The reciprocal of 21541.

Palindrome?

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

The number 21541 is not a palindrome.

Not A Prime Number

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

Twenty-one thousand five hundred and forty-one 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.

Twenty-one thousand five hundred and forty-one 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 twenty-one thousand five hundred and forty-one has the following 2 prime factors:

13
Thirteen
1657
One Thousand Six Hundred and Fifty-Seven

Prime Factorization

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

131 · 16571 = 21541

Base Conversions

The number twenty-one thousand five hundred and forty-one in 35 different bases