Properties of the Number -1497

Four Hundred Ninety-Seven

Basics

Value: -1498 → -1497 → -1496

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 499

Divisors: 1, 3, 499, 1497

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10111011001

Octal: -2731

Duodecimal: -A49

Hexadecimal: -5d9

Square: 2241009

Square Root: 38.691084244306204

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

G.f.: 1/(1 - x/(1+2·x - x³/(1+2·x² - x⁵/(1+2·x³ - x⁷/(1+2·x⁴ - x⁹/(1 - ...)))))), a continued fraction. A275761

Triangle read by rows: T(n,k) (1 <= k <= n) given by T(n,1) = T(n,n) = 1, otherwise T(n,k) = (m·n-m·k+1)*T(n-1,k-1) + (m·k-m+1)*T(n-1,k), where m = -3. A392664

Perrin sequence (or Perrin numbers, or Ondrej Such sequence): a(n) = a(n-2) + a(n-3) with a(0) = 3, a(1) = 0, a(2) = 2. A1608

Positive integers which apparently never result in a palindrome under repeated applications of the function A056964(x) = x + (x with digits reversed). A23108

Fifth spoke of a hexagonal spiral. A56109

Numbers m such that the Bernoulli number B_2·m has denominator 42. A51227

Numbers n such that 3ⁿ + 2^n-1 is prime. A82103

a(n) = (n + 2)*(2·n² - n + 3)/6. A56520

Number of "ON" cells at n-th stage in 2-dimensional cellular automaton (see Comments for precise definition). A160720

E.g.f.: A(x) = exp( x/A(-x·A(x)⁶)² ). A213111