Properties of the Number 51340

Fifty-One Thousand Three Hundred Forty

Basics

Value: 51339 → 51340 → 51341

Parity: even

Prime: No

Previous Prime: 51329

Next Prime: 51341

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 5 × 17 × 151

Divisors: 1, 2, 4, 5, 10, 17, 20, 34, 68, 85

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100100010001100

Octal: 144214

Duodecimal: 25864

Hexadecimal: c88c

Square: 2635795600

Square Root: 226.58331800907143

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

G.f.: A(x) = ∑_n>=0 xⁿ / ∏_k=1..n (1 - k·x^k). A193196

Numbers k such that k+1, k+3, k+7 and k+9 are all primes. A125855

a(n) = 36·n² - 17·n + 2. A157265

Numbers that can be written as the product of two divisors greater than 1 such that the number is contained in the string concatenation of the divisors. A355790

Number of compositions (ordered partitions) of n into tetranacci numbers 1,2,4,8,15,29, ... (A000078). A357453

a(n) = a(n-1) + a(n-2) + a(n-3), with a(0)=1, a(1)=4, a(2)=5. A354080

Triangle read by rows: T(n,k) = is the number of directed column-convex polyominoes of area n having along the lower contour exactly k reentrant corners, i.e., a vertical step that is followed by a horizontal step (n >= 1, k >= 0). A121466

G.f. satisfies A(x) = 1 + x·A(x)² * (1 + x·A(x)²)³. A367285

Least k such that first k terms of A022303 contain n more 2's than 1's. A25518

A simple 2-dimensional array, read by antidiagonals: T[i,j] = 1 for j>0, T[i,0] = i+1; i,j = 0,1,2,3,... A51340