Nearby Numbers

Positive, nonzero integers within three units

21054

Twenty-One Thousand and Fifty-Four

21055

Twenty-One Thousand and Fifty-Five

21056

Twenty-One Thousand and Fifty-Six

21058

Twenty-One Thousand and Fifty-Eight

21059

Twenty-One Thousand and Fifty-Nine

21060

Twenty-One Thousand and Sixty

Scientific Notation

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

2.1057e4

Reciprocal

A number multiplied with its reciprocal is one.

0.00004749014579474759

The reciprocal of 21057.

Palindrome?

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

The number 21057 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 and fifty-seven 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 and fifty-seven is a composite number with 4 total factors (including 1 and itself).

Prime Factors

3

Three

7019

Seven Thousand and Nineteen

Prime Factorization

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

31 · 70191 = 21057

Base Conversions

The number twenty-one thousand and fifty-seven in 35 different bases