Properties of the Number 26955

Twenty-Six Thousand Nine Hundred Fifty-Five

Basics

Value: 26954 → 26955 → 26956

Parity: odd

Prime: No

Previous Prime: 26953

Next Prime: 26959

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 × 599

Divisors: 1, 3, 5, 9, 15, 45, 599, 1797, 2995, 5391

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110100101001011

Octal: 64513

Duodecimal: 13723

Hexadecimal: 694b

Square: 726572025

Square Root: 164.17977951014552

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) is the number of permutations of {1,2,...,n} having k up-down runs (1 <= k <= n). A186370

Expansion of (1-x)/(1+x+2·x²+x³). A78051

a(0)=0, a(1)=1, a(2)=2 and a(n) = a(n-1) - 2a(n-2) + a(n-3). A166117

Solutions y of the Mordell equation y² = x³ - 3a² + 1 for a = 0,1,2, ... (solutions·are given by the sequence A000466). A173202

a(n) = ∑_{i=0..floor(n/2)} T(2i,n-2i), array T as in A049735. A49738

Numbers n such that n⁸+8 and n⁸-8 are prime. A239503

a(n) = ∑_k=0..n (k+1) * T(n,k), with T given by A026386. A26955