Properties of the Number 27455

Twenty-Seven Thousand Four Hundred Fifty-Five

Basics

Value: 27454 → 27455 → 27456

Parity: odd

Prime: No

Previous Prime: 27449

Next Prime: 27457

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 × 17 ² × 19

Divisors: 1, 5, 17, 19, 85, 95, 289, 323, 1445, 1615

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110101100111111

Octal: 65477

Duodecimal: 13A7B

Hexadecimal: 6b3f

Square: 753777025

Square Root: 165.6955038617524

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) = n*(n² + 1)/2. A6003

a(n) = (n - 1)*(4·n² - 8·n + 5). A317297

Nonsquarefree "year numbers" (numbers n such that φ(n) = 2*φ(σ(n)): A137815). A137816

Row sums of the triangular array A246696. A246697

Numbers m such that the product m*(m+1) has a set of prime divisors, from greatest down to 2, that is missing exactly one prime divisor. A391885

Positive integers i for which A112049(i) == 8. A112068

G.f.: ∑_n=-oo..+oo x^n*(n+1/2) * C(x)^3·n-3, where C(x) = 1 + x·C(x)² is the g.f. of the Catalan numbers (A000108). A355348

Numbers n such that n⁴ is a sum of 4th powers of four nonzero integers whose sum is n. A138760

Partial sums of A049486. A174655

a(n) = 27*(n - 6)² + 4*(n - 6)³ = ((n - 6)²)*(4·n + 3). A245032