Properties of the Number 53220

Fifty-Three Thousand Two Hundred Twenty

Basics

Value: 53219 → 53220 → 53221

Parity: even

Prime: No

Previous Prime: 53201

Next Prime: 53231

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 5 × 887

Divisors: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1100111111100100

Octal: 147744

Duodecimal: 26970

Hexadecimal: cfe4

Square: 2832368400

Square Root: 230.69460331789298

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

Polar structured meta-anti-diamond numbers, the n-th number from a polar structured n-gonal anti-diamond number sequence. A100188

Numbers k such that the three second-degree cyclotomic polynomials x² + 1, x² - x + 1 and x² + x + 1 are simultaneously prime when evaluated at x=k. A87277

Even triangle !n. This table read by rows gives the coefficients of sum formulas of n-th Left factorials (A003422). The k-th row (6>=k>=1) contains T(i,k) for i=1 to k+2, where k=[2·n+1+(-1)^n-1]/4 and T(i,k) satisfies !n = ∑_i=1..k+2 T(i,k) * n^i-1 / (2·k-2)!. A102411

G.f. A(x) satisfies A(x) = (1 + x)² + x·A(x)³ / (1 + x)². A367640

Numbers k such that σ(k - 2) = σ(k + 2). A223091

a(n) = (3·n-1) * 2^n-2. A53220