Properties of the Number 90195

Ninety Thousand One Hundred Ninety-Five

Basics

Value: 90194 → 90195 → 90196

Parity: odd

Prime: No

Previous Prime: 90191

Next Prime: 90197

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 7 × 859

Divisors: 1, 3, 5, 7, 15, 21, 35, 105, 859, 2577

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110000001010011

Octal: 260123

Duodecimal: 44243

Hexadecimal: 16053

Square: 8135138025

Square Root: 300.3248241487873

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

Numbers k such that φ(k) = φ(k-2) - φ(k-1). A66232

Numbers n such that φ(n) = φ(n+11), with Euler's totient function φ = A000010. A276504

Number of strings of numbers x(i=1..5) in 0..n with sum i²*x(i) equal to n·25. A183956

a(n) = (n-1)² - φ(n)*σ(n), where φ is A000010 and σ is A000203. A324331

Numbers d such that A324331(x) = d² only when·is a squarefree semiprime (A006881). A324333

Numbers d such that A324331(x)=d² not only for squarefree semiprimes x (A006881) but also for·in A324333. A324334

Numbers m such that A324331(m) = (m-1)² - φ(m)*σ(m) is a square, even though they are not squarefree semiprimes (A006881). A324332

Primes which when multiplied by their largest digit and 1 is subtracted form another prime. A90195