Properties of the Number 21350

Twenty-One Thousand Three Hundred Fifty

Basics

Value: 21349 → 21350 → 21351

Parity: even

Prime: No

Previous Prime: 21347

Next Prime: 21377

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 × 5 ² × 7 × 61

Divisors: 1, 2, 5, 7, 10, 14, 25, 35, 50, 61

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 101001101100110

Octal: 51546

Duodecimal: 10432

Hexadecimal: 5366

Square: 455822500

Square Root: 146.11639196202458

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

Expansion of g.f. A(x) satisfying 1/5 = ∑_n=-oo..+oo xⁿ * (A(x) - xⁿ)^n-1, with a(0) = 6. A363315

Fourth right hand column of triangle A165674. A165676

Anagraprod Integers. Integers N that reproduce their multiset of digits when all the products of two successive digits of N are done (and considered together). A296451

Records in A224796. A224719

Number of ways to pay n dollars using Canadian coins, that is: nickels (5 cents), dimes (10 cents), quarters (25 cents), loonies (100 cents or $1 coins) and toonies ($2 coins). A307849

Percolation series for directed hexagonal lattice. A6836

Maximum value of (1/2)*∑_i=1..n ∑_j=1..n ∑_k=1..n ∑_l=1..n gcd(b(i,j),b(k,l)) * ((i-k)²+(j-l)²) for an n X n matrix b filled with the integers 1 to n². A261177

Number of lower triangular n X n arrays colored with integers 0 upwards introduced in row major order, with no element equal to any diagonal or antidiagonal neighbor. A182367

Total surface area of all rectangular prisms with dimensions p X q X q, where p and q are prime, n = p+q and p<q. A335188

Positive integers m such that π(m³) = π(j³) + π(k³) for some 0 < j <= k < m. A262409