Properties of the Number -4805

Eight Hundred Five

Basics

Value: -4806 → -4805 → -4804

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 5 × 31 ²

Divisors: 1, 5, 31, 155, 961, 4805

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1001011000101

Octal: -11305

Duodecimal: -2945

Hexadecimal: -12c5

Square: 23088025

Square Root: 69.31810730249349

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

Triangle read by rows. T(n, k) = BellPolynomial(n, -k). A350263

Values of n such that L(15) and N(15) are both prime, where L(k) = (n²+n+1)*2^2·k + (2·n+1)*2^k + 1, N(k) = (n²+n+1)*2^k + n. A227518

Number of sublattices of index n in generic 3-dimensional lattice. A1001

a(n) = 5·n². A33429

Numbers n such that the decimal expansions of both n and n² have 0 as smallest digit and 8 as largest digit. A256708

Numbers m such that there are precisely 7 groups of order m. A249550

a(n) = A005940(1+(1+(3·A156552(n)))) = (1/2) * A005940(1+(3·A156552(2·n))). A329603

Numbers k giving rise to prime quadruples (30k+11, 30k+13, 30k+17, 30k+19). A14561

The Collatz or 3x+1 map (A006370) conjugated by unary-binary-encoding (A156552). A341515

Numbers with ordered prime signature (1,2). A95990