Properties of the Number 5721

Five Thousand Seven Hundred Twenty-One

Basics

Value: 5720 → 5721 → 5722

Parity: odd

Prime: No

Previous Prime: 5717

Next Prime: 5737

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 1907

Divisors: 1, 3, 1907, 5721

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1011001011001

Octal: 13131

Duodecimal: 3389

Hexadecimal: 1659

Square: 32729841

Square Root: 75.63729238940273

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

First spoke of a hexagonal spiral. A56105

Number A(n,k) of endofunctions on [n] that are the k-th power of an endofunction; square array A(n,k), n>=0, k>=0, read by antidiagonals. A247026

Triangle read by rows: T(n,k) is the number of simple graphs on n unlabeled nodes having chromatic number k, 1 <= k <= n. A84268

Number of 3-chromatic (i.e., chromatic number equals 3) simple graphs on n nodes. A76279

Number of meaningful differential operations of the n-th order on the space R⁹. A90994

Semiprimes in A056105. A113519

Partial sums of A160239. A245542

Sum of the largest parts of the partitions of n into 8 squarefree parts. A326452

Numbers n such that the decimal number concat(3,n) is a square. A273358

Base 8 digits are, in order, the first n terms of the periodic sequence with initial period 1,3. A37580