Properties of the Number -221651

Two Hundred Twenty-One Thousand Six Hundred Fifty-One

Basics

Value: -221652 → -221651 → -221650

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 23 ² × 419

Divisors: 1, 23, 419, 529, 9637, 221651

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110110000111010011

Octal: -660723

Duodecimal: -A832B

Hexadecimal: -361d3

Square: 49129165801

Square Root: 470.79825828055056

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

Chebyshev T-sequence with Diophantine property. A77417

Denominators of continued fraction convergents to sqrt(35). A41059

a(n)*a(n+3) - a(n+1)*a(n+2) = 5, given a(0)=a(1)=1, a(2)=6. A80875

G.f. A(x) satisfies A(x) = (1 + x·A(x)³)/(1 - x·A(x))². A379174

Generalized Markoff numbers: union of numbers a, b, c, d satisfying the Markoff(4) equation a² + b² + c² + d² = 4·a*b·c*d. A75276