Properties of the Number 90075

Ninety Thousand Seventy-Five

Basics

Value: 90074 → 90075 → 90076

Parity: odd

Prime: No

Previous Prime: 90073

Next Prime: 90089

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 ² × 1201

Divisors: 1, 3, 5, 15, 25, 75, 1201, 3603, 6005, 18015

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101111111011011

Octal: 257733

Duodecimal: 44163

Hexadecimal: 15fdb

Square: 8113505625

Square Root: 300.12497396917837

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) = (nⁿ⁺¹+(-1)ⁿ)/(n+1)². A81215

Smallest k such that k·n² +1 is an n-th power. A193746

a(n) = (7²^n - 1)/2ⁿ⁺³. A359500

Numerators of continued fraction convergents to sqrt(237). A41442

Number of unlabeled Hugenholtz diagrams with n nodes. A57572

a(n) = ((2ⁿ - 1)^2ⁿ - 1)/(2ⁿ)². A123591

Number of length n+2 0..6 arrays with no three equal elements in a row and new values 0..6 introduced in 0..6 order. A242469

Parity of partition function A000041. A40051

Number of n-node triangulations of sphere in which every node has degree >= 4. A103

T(n,k)=Number of length n+2 0..k arrays with no three equal elements in a row and new values 0..k introduced in 0..k order. A242472