Properties of the Number 55720

Fifty-Five Thousand Seven Hundred Twenty

Basics

Value: 55719 → 55720 → 55721

Parity: even

Prime: No

Previous Prime: 55717

Next Prime: 55721

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ³ × 5 × 7 × 199

Divisors: 1, 2, 4, 5, 7, 8, 10, 14, 20, 28

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 1101100110101000

Octal: 154650

Duodecimal: 282B4

Hexadecimal: d9a8

Square: 3104718400

Square Root: 236.05084198112914

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 genus 2, degree n, simply ramified covers of an elliptic curve. A170991

Nonunitary weird numbers: numbers that are nonunitary abundant but not nonunitary pseudoperfect. A327948

Numbers k for which A354102(k) = A354102(σ(k)). A354106

Triangular array T: put T(n,0)=n for all n >= 0 and all other T(n,k)=0; then put T(n,k)=Sum{T(i,j): 0<=j<=i-n+k, n-k<=i<=n}. A54144

Triangular array T: put T(n,0)=n+1 for all n >= 0 and all other T(n,k)=0; then put T(n,k)=Sum{T(i,j): 0<=j<=i-n+k, n-k<=i<=n}. A53199

Expansion of g.f. x*(1 +4·x +4·x² +18·x³ +7·x⁴ +7·x⁵ -2·x⁶ -x⁷ -x⁸ -x⁹) / (1-20·x⁶+x¹²). A116561

Numbers k such that d(k)+1 | k. A55720