Properties of the Number -271443

Two Hundred Seventy-One Thousand Four Hundred Forty-Three

Basics

Value: -271444 → -271443 → -271442

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 90481

Divisors: 1, 3, 90481, 271443

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1000010010001010011

Octal: -1022123

Duodecimal: -111103

Hexadecimal: -42453

Square: 73681302249

Square Root: 521.001919382261

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

Expansion of (1-2·x)/(1+x-x²). A75193

Alternating row sums of Riordan triangle A110162. A219233

a(n)=A128056(n)/A128055(n). A128053

Sum of Lucas numbers and inverted Lucas numbers: a(n) = A000032(n)*A075193(n). A75270

Lucas numbers beginning at 2: L(n) = L(n-1) + L(n-2), L(0) = 2, L(1) = 1. A32

Lucas numbers (beginning with 1): L(n) = L(n-1) + L(n-2) with L(1) = 1, L(2) = 3. A204

Bisection of Lucas numbers: a(n) = L(2·n) = A000032(2·n). A5248

Round φⁿ to the nearest integer. A169985

Fibonacci-type sequence based on subtraction: a(0) = 1, a(1) = 2 and a(n) = a(n-2) - a(n-1). A61084

Numbers such that floor(a(n)² / 5) is a square. A204520