Properties of the Number 81010

Eighty-One Thousand Ten

Basics

Value: 81009 → 81010 → 81011

Parity: even

Prime: No

Previous Prime: 81001

Next Prime: 81013

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 2 × 5 × 8101

Divisors: 1, 2, 5, 10, 8101, 16202, 40505, 81010

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110001110010

Octal: 236162

Duodecimal: 3AA6A

Hexadecimal: 13c72

Square: 6562620100

Square Root: 284.6225570821821

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(1) = 1; a(n+1) is the smallest number > a(n) which differs from it at every digit. A68860

a(1) = 1; thereafter a(n) is always the smallest integer > a(n-1) not leading to a contradiction, such that any six consecutive digits in the sequence sum up to a prime. A152606

The sequence alternates even and odd integers but also even and odd digits; it is monotonically increasing and a(n) is always the smallest integer fitting the pattern. A137667

a(n) = Fibonacci(4n+1) + 2, or Fibonacci(2n-1)*Lucas(2n+2). A81010