Properties of the Number 50421

Fifty Thousand Four Hundred Twenty-One

Basics

Value: 50420 → 50421 → 50422

Parity: odd

Prime: No

Previous Prime: 50417

Next Prime: 50423

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 3 × 7 ⁵

Divisors: 1, 3, 7, 21, 49, 147, 343, 1029, 2401, 7203

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1100010011110101

Octal: 142365

Duodecimal: 25219

Hexadecimal: c4f5

Square: 2542277241

Square Root: 224.54620905283616

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

Numbers of the form 3ⁱ*7^j with i, j >= 0. A3594

Numbers whose prime factors are 3 and 7. A33850

T(n,k) = number of n X k 0..3 arrays with entries increasing mod 4 by 0, 1 or 2 rightwards and downwards, starting with upper left zero. A222444

Integers k for which {prime(1), prime(2), ..., prime(k)} (mod 4) is biased towards 1. A96628

a(n) = 3·7ⁿ. A169634

T(n,k)=Number of nXk 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, diagonally or antidiagonally, and top left element zero. A232955

Triangle by rows T(n,k), showing the number of meanders with length (n+1)*3 and containing (k+1)*3 L's and (n-k)*3 R's, where L's and R's denote arcs of equal length and a central angle of 120 degrees which are positively or negatively oriented. A194595

Number of rooted trees with n points and exactly k specified colors: C(n,k), 1<=n, 1<=k<=n. A141610

Numbers n such that the n-th cyclotomic polynomial has a root mod 7. A245479

3-parking triangle T(r, i, 3) read by rows: T(r, i, k) = (r + 1)^i-1*binomial(k*(r + 1) + r - i - 1, r - i) with k = 3 and 0 <= i <= r. A329059