Properties of the Number 51207

Fifty-One Thousand Two Hundred Seven

Basics

Value: 51206 → 51207 → 51208

Parity: odd

Prime: No

Previous Prime: 51203

Next Prime: 51217

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 13 ² × 101

Divisors: 1, 3, 13, 39, 101, 169, 303, 507, 1313, 3939

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100100000000111

Octal: 144007

Duodecimal: 25773

Hexadecimal: c807

Square: 2622156849

Square Root: 226.28963741187974

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

a(n) = a(n-1) + a(n-4); first four terms are 0,1,2,3. A78467

Numbers k such that there is no prime p and index j < k such that A002182(k) = p·A002182(j). A272606

Numbers k such that 10^k - 801 is prime. A271618

Numbers of the form x²-5^y >= 0. A51207

Nonprime record values of Euler's totient function (A000010): 1 and composite n such that φ(n) is greater than all smaller composites. A131195