Properties of the Number 61465

Sixty-One Thousand Four Hundred Sixty-Five

Basics

Value: 61464 → 61465 → 61466

Parity: odd

Prime: No

Previous Prime: 61463

Next Prime: 61469

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 5 × 19 × 647

Divisors: 1, 5, 19, 95, 647, 3235, 12293, 61465

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111000000011001

Octal: 170031

Duodecimal: 2B6A1

Hexadecimal: f019

Square: 3777946225

Square Root: 247.9213584990208

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

Rectified 5-cell numbers: the coefficient of x^2n-2 in (1+x+x²+ ... + x^n-1)⁵. A179095

G.f. A(x) satisfies: 1 = ∑_n>=0 (-1)ⁿ * x^n*(n+1/2) * ((1+x)ⁿ + A(x))ⁿ⁺¹. A341341

a(n) = floor(∑_k=1..n sqrt(2k-1)). A61465