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Properties of the Number 22165

Twenty-Two Thousand One Hundred Sixty-Five

Basics

Value: 22164 → 22165 → 22166

Parity: odd

Prime: No

Previous Prime: 22159

Next Prime: 22171

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 5 × 11 × 13 × 31

Divisors: 1, 5, 11, 13, 31, 55, 65, 143, 155, 341

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101011010010101

Octal: 53225

Duodecimal: 109B1

Hexadecimal: 5695

Square: 491287225

Square Root: 148.87914561818255

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

Partial sums of the binomial coefficients binomial(3·n,n) (A005809). A188675
Rhonda numbers in vigesimal number system. A255732
Number of squares on infinite chessboard at <= n knight's moves from a fixed square. A18836
T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 2 or 3 king-move adjacent elements, with upper left element zero. A297823
T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 2, 3 or 6 king-move adjacent elements, with upper left element zero. A297993
Number of nX2 0..1 arrays with every element equal to 1, 2 or 3 king-move adjacent elements, with upper left element zero. A297817
T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 2, 3, 6 or 7 king-move adjacent elements, with upper left element zero. A298653
T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 2, 3, 6 or 8 king-move adjacent elements, with upper left element zero. A298846
T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 2, 3, 6, 7 or 8 king-move adjacent elements, with upper left element zero. A299607
Number of compositions (ordered partitions) of n into at most 5 squarefree parts. A347780