Properties of the Number -548

Five Hundred Forty-Eight

Basics

Value: -549 → -548 → -547

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 137

Divisors: 1, 2, 4, 137, 274, 548

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1000100100

Octal: -1044

Duodecimal: -398

Hexadecimal: -224

Square: 300304

Square Root: 23.40939982143925

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

Alternating sum of diagonals in A060177. A104575

Expansion of 1/(1 +x -2·x² -x³ -x⁴ -3·x⁵ +2·x⁶ +2·x⁷ +3·x⁸ +2·x⁹ -3·x¹⁰ -7·x¹¹ -3·x¹² -5·x¹³). A143372

Triangle T, read by rows, such that column k equals column 0 of T^k+1, where column 0 of T allows the n-th row sums to be zero for n>0 and where T^k is the k-th power of T as a lower triangular matrix. A101897

Choose smallest m>0 such that the n-th rational prime p ramifies in the imaginary quadratic extension field K = Q(sqrt(-m)); a(n) = discriminant(K). A220861

a(n) = ∑_{k=0..floor(n/4)} (-1)^k * binomial(n+3,4·k+3) * Catalan(k). A360050

The numerator of the n-th term of the inverse binomial transform of the sequence 0, 1, 0, B₂, B₃, B₄, .. of modified Bernoulli numbers. A176618

Magnetization for hexagonal lattice. A7207

Years in which a transit of Venus (as seen from Earth) took place or is expected to occur, according to the catalog by Fred Espenak. A171467

Expansion of 1/(1 + x² + x³/(1 + x⁵ + x⁷/(1 + x¹¹ + x¹³/(1 + ... + x^prime(2·k)/(1 + x^prime(2·k+1) + ...))))), a continued fraction. A292801

G.f. satisfies A(x) = exp( ∑_k>=1 (3 * (-1)^k + A(x^k)) * x^k/k ). A363566