Properties of the Number 66551

Sixty-Six Thousand Five Hundred Fifty-One

Basics

Value: 66550 → 66551 → 66552

Parity: odd

Prime: No

Previous Prime: 66541

Next Prime: 66553

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 61 × 1091

Divisors: 1, 61, 1091, 66551

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000001111110111

Octal: 201767

Duodecimal: 3261B

Hexadecimal: 103f7

Square: 4429035601

Square Root: 257.97480497133824

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

Number of free polybends with n cells. A392389

11-gonal numbers which are products of two distinct primes. A354448

Numbers k such that (13·10^k - 73) / 3 is prime. A279171

T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction. A250656

Expansion of e.g.f. (1+x) * exp(x²*(1+x)²). A387969

Let N =149162536496481100121441691962252562893243614..., the concatenation of the squares. a(n) is the n-digit number formed from the digits of N starting from the {n(n-1)/2 +1}th digit. Omit any leading zeros. A66551