Properties of the Number 90106

Ninety Thousand One Hundred Six

Basics

Value: 90105 → 90106 → 90107

Parity: even

Prime: No

Previous Prime: 90089

Next Prime: 90107

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 45053

Divisors: 1, 2, 45053, 90106

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101111111111010

Octal: 257772

Duodecimal: 4418A

Hexadecimal: 15ffa

Square: 8119091236

Square Root: 300.17661467875877

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

For 1<=x<=n, 1<=y<=n with gcd(x,y)=1, write 1 = gcd(x,y) = u·x+v·y with u,v minimal; a(n) = m²*s, where s is the population variance of the values of v and m is the number of such values. A345693

Numbers that are the same upside down (using only digits 0, 1, 6 and 9). A169731

Number of nondecreasing arrangements of n+2 numbers in 0..4 with each number being the sum mod 5 of two others. A183907

The canonical skew-binary numbers. A169683

Numerators of constant term in a formal analog of Bernoulli numbers. A85092

If n <= 5 then a(n) = 1, if 6 <= n <= 8 then 2, if n = 9 or 10 then 3, if n = 11, 12 or 13 then n-7; otherwise a(n) = 2·a(n - 4) + a(n - 12). A239905

Values of k such that {P(k), P(k+1), ..., P(k+12)} are all prime numbers, where P(k) = k² + k + 41. A90106