Properties of the Number 201

Two Hundred One

Basics

Value: 200 → 201 → 202

Parity: odd

Prime: No

Previous Prime: 199

Next Prime: 211

Digit Sum: 3

Digital Root: 3

Palindrome: No

Factorization: 3 × 67

Divisors: 1, 3, 67, 201

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11001001

Octal: 311

Duodecimal: 149

Hexadecimal: c9

Square: 40401

Square Root: 14.177446878757825

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

Coordination sequence for planar net 3.3.3.3.6 (also called the fsz net). A250120

Squarefree semiprimes: Numbers that are the product of two distinct primes. A6881

Numbers in base 3. A7089

Numbers in base 5. A7091

Numbers in base 4. A7090

Niven (or Harshad, or harshad) numbers: numbers that are divisible by the sum of their digits. A5349

Lucky numbers. A959

a(n) = ∑_k=1..n floor(n/k); also ∑_k=1..n d(k), where d = number of divisors (A000005); also number of solutions to x·y = z with 1 <= x,y,z <= n. A6218

a(n) = 4·n + 1. A16813

Integers written in factorial base. A7623

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