Properties of the Number -241

Two Hundred Forty-One

Basics

Value: -242 → -241 → -240

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 7

Digital Root: 7

Palindrome: No

Factorization: 241

Divisors: 1, 241

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11110001

Octal: -361

Duodecimal: -181

Hexadecimal: -f1

Square: 58081

Square Root: 15.524174696260024

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

Expansion of (1 - x)/(1 - 2·x + 3·x²) in powers of x. A87455

Square array A(n,k), n >= 1, k >= 0, read by antidiagonals: A(n,k) = ∑_d∣n (-1)^n/d+d*d^k. A322083

a(n) = 2ⁿ * ∑_k=0..n k^p*q^k, where p=3, q=-1/2. A232604

Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of e.g.f.: exp(∏_j=1..n 1/(1+x^j) - 1). A294289

Sums of wrecker ball sequences starting with n. A248961

Expansion of ∏_k>=1 (1 + (x*(1 - x))^k). A307501

Table read by rows: row n contains the partial sums of the wrecker ball sequences starting with n, cf. A248939. A248973

Expansion of e.g.f. ∏_k>=1 sech(x^k) (even powers only). A330517

Expansion of e.g.f. 1/(exp(x) - x⁴). A352304

a(n) = 2^φ(n) - ∑_j=0..n binomial(φ(n), φ(j)). A73318