Properties of the Number -11851

Eleven Thousand Eight Hundred Fifty-One

Basics

Value: -11852 → -11851 → -11850

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 7 × 1693

Divisors: 1, 7, 1693, 11851

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10111001001011

Octal: -27113

Duodecimal: -6A37

Hexadecimal: -2e4b

Square: 140446201

Square Root: 108.8622983406101

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) = ∑_k=1..n (-k)^{n - floor(n/k}). A345107

Expansion of ∏_k>0 (1+k²*x^k)^-1/k. A303354

a(0) = 1; for n > 0, a(n) = 41·n² + 2. A206399

a(n) = [xⁿ] (1 + x + x³ + x⁴)ⁿ. A228960

Number of set-systems (without {}) on n vertices that are closed under intersection and have an edge containing all of the vertices, or Moore families without {}. A326903

Number of vertices formed in a hexagon by straight line segments when connecting the n-1 points between each corner that divide each edge into n equal parts to the n-1 points on the edge on the opposite side of the hexagon. A367663

a(n) = number of tuples (a,b,c,d) of natural numbers a,b,c,d <= n with gcd(a,b)=gcd(b,c)=gcd(c,d)=gcd(d,a)=1. A256391

Number of set partitions of [n] where all prime-indexed blocks are singletons. A332398

Semiprimes k such that none of k-2, k-1, k+1, and k+2 is squarefree. A364010

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 54 ones. A31822