Properties of the Number 91441

Ninety-One Thousand Four Hundred Forty-One

Basics

Value: 91440 → 91441 → 91442

Parity: odd

Prime: No

Previous Prime: 91433

Next Prime: 91453

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 7 × 13063

Divisors: 1, 7, 13063, 91441

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110010100110001

Octal: 262461

Duodecimal: 44B01

Hexadecimal: 16531

Square: 8361456481

Square Root: 302.39212952720845

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

Number of n-node triangulations of the sphere with minimal degree 5. A81621

a(1) = a(2) = 1. a(n) = a(n-1) + (largest nonprime {1 or composite} among the first n-2 terms of the sequence). A120760

G.f.: exp( ∑_n>=1 [∑_k=0..2n C(2n,k)²*y^k]*xⁿ/n ) = ∑_n>=0,k=0..2n T(n,k)*xⁿ*y^k, as a triangle of coefficients T(n,k) read by rows. A181145

Expansion of e.g.f. exp(x)*(1-x)^-x. A184947

a(1)=1, a(2)=4, and thereafter a(n) = a(n-2) + k·a(n-1), with minimal k >= 1 such that a(n) is not prime. A374055

Expansion of (1+x⁴*C)*C⁴, where C = (1-(1-4·x)^1/2)/(2·x) is g.f. for Catalan numbers, A000108. A71745

Table (by antidiagonals) of permutations of two types of objects such that each cycle contains at least one object of each type. Each type of object is labeled from its own label set. A91441