The Number
21859
Twenty-One Thousand Eight Hundred and Fifty-Nine
Nearby Numbers
Positive, nonzero integers within three units
Scientific Notation
Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.
2.1859e4
Reciprocal
A number multiplied with its reciprocal is one.
0.00004574774692346402
The reciprocal of 21859.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 21859 is not a palindrome.
A Prime Number
A prime number is a positive integer that is divisible only by itself and one.
Twenty-one thousand eight hundred and fifty-nine is the 2452nd prime number. See primes in Base 10 Decimal
Not A Composite
Composites have more than just these two factors.
Twenty-One Thousand Eight Hundred and Fifty-Nine is not a composite number because it has exactly two factors: One and Twenty-One Thousand Eight Hundred and Fifty-Nine
Prime Factors
The number twenty-one thousand eight hundred and fifty-nine has the following 1 prime factor:
Prime Factorization
The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities
218591
= 21859
Base Conversions
The number twenty-one thousand eight hundred and fifty-nine in 35 different bases