Properties of the Number 7185

Seven Thousand One Hundred Eighty-Five

Basics

Value: 7184 → 7185 → 7186

Parity: odd

Prime: No

Previous Prime: 7177

Next Prime: 7187

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 479

Divisors: 1, 3, 5, 15, 479, 1437, 2395, 7185

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1110000010001

Octal: 16021

Duodecimal: 41A9

Hexadecimal: 1c11

Square: 51624225

Square Root: 84.76437931112338

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) = 9ⁿ + 5ⁿ - 1. A155636

Partial sums of A097988 (d₃(n)²). A330570

T(n,k)=Number of nXk binary arrays with rows lexicographically nondecreasing and columns lexicographically nondecreasing and row sums nondecreasing and column sums nonincreasing. A266935

Numbers k such that k![4] + 2 is prime, where k![4] = A007662(k) = quadruple factorial. A283553

Numbers n for which there are exactly five k such that n = k + (product of nonzero digits of k). A96926

T(n,k)=Number of nXk 0..1 arrays with each 1 adjacent to 0, 2 or 4 king-move neighboring 1s. A296725

T(n,k)=Number of nXk 0..4 arrays with each element·equal to the number of its horizontal and vertical neighbors equal to 4,2,1,0,1 for x=0,1,2,3,4. A197805

Odd numbers k for which gcd(k, A003961(k)) = gcd(σ(k), A003961(k)) > 1, where A003961(n) is fully multiplicative with a(prime(k)) = prime(k+1), and σ is the sum of divisors function. A349176

Expansion of ∏_k>=0 (1-x^5·k+1)^5·k+1. A285071

Numbers of the form p·q*r, where p < q < r are odd primes such that r = +/-1 (mod p·q). A160353