Properties of the Number 61419

Sixty-One Thousand Four Hundred Nineteen

Basics

Value: 61418 → 61419 → 61420

Parity: odd

Prime: No

Previous Prime: 61417

Next Prime: 61441

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 59 × 347

Divisors: 1, 3, 59, 177, 347, 1041, 20473, 61419

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1110111111101011

Octal: 167753

Duodecimal: 2B663

Hexadecimal: efeb

Square: 3772293561

Square Root: 247.82856978161337

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)=sum{k=0..floor(n/2), C(n,2k)*A000108(floor(k/2))}. Inverse binomial transform is aeration of doubled Catalan numbers. A157021

Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0110-1111-0110 pattern in any orientation. A146918

a(n) = ceiling(a(n-1)*3/2) with a(1) = 1. A61419