Properties of the Number 21941

Twenty-One Thousand Nine Hundred Forty-One

Basics

Value: 21940 → 21941 → 21942

Parity: odd

Prime: No

Previous Prime: 21937

Next Prime: 21943

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 37 × 593

Divisors: 1, 37, 593, 21941

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101010110110101

Octal: 52665

Duodecimal: 10845

Hexadecimal: 55b5

Square: 481407481

Square Root: 148.12494725737457

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

a(n) = 16n² + n. A157474

Expansion of ∏_k>=1 (1 + x^2·k+1)^k. A263149

a(n) = binary code (shown here in decimal) of the position of natural number n in the beanstalk-tree A218778. A218614

a(n) = binary code (shown here in decimal) of the position of the predecessor of the natural number pair (2n,2n+1) in the compact beanstalk-tree A218782. A218790

Positive integers whose square is the sum of 74 consecutive squares. A257825

a(n) is the number of regions formed by n-secting the angles of a decagon. A335800

a(n) = 1369·n² + 37. A158741

Numbers m congruent to 5 mod 6 such that for all k >= 1 the numbers (m·4^k + 1)/3 are composite. A233551

Number of 4X4 0..n arrays with corresponding row and column sums equal. A229871

Decimal expansion of 1/937. A21941