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Properties of the Number 5421

Five Thousand Four Hundred Twenty-One

Basics

Value: 5420 → 5421 → 5422

Parity: odd

Prime: No

Previous Prime: 5419

Next Prime: 5431

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 3 × 13 × 139

Divisors: 1, 3, 13, 39, 139, 417, 1807, 5421

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010100101101

Octal: 12455

Duodecimal: 3179

Hexadecimal: 152d

Square: 29387241

Square Root: 73.62744053679987

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 "ON" cells at n-th stage in simple 2-dimensional cellular automaton (same as A160410, but a(1) = 1, not 4). A160414
Second 9-gonal (or nonagonal) numbers: a(n) = n*(7·n+5)/2. A179986
Numbers k such that prime(k) + prime(k+1) is a square. A64397
T(n,k)=Number of nXk binary arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling two not more than once. A268995
a(1) = 7; a(n) is smallest number >= a(n-1) such that the juxtaposition a(1)a(2)...a(n) is a prime. A46257
Total number of vertices in graph formed by the straight line segments connecting the edges of an equilateral triangle with the n-1 points resulting from a subdivision of the sides into n equal pieces, counting coinciding intersection points only once. A331782
Number of ON cells at n-th stage in simple 2-dimensional cellular automaton (see Comments lines for definition). A256530
Number of partitions of n having no perfect cube parts (n>=0). A264393
Numbers with digits in strictly decreasing order, sorted lexicographically. A262557
T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 1, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero. A306172