Properties of the Number 61775

Sixty-One Thousand Seven Hundred Seventy-Five

Basics

Value: 61774 → 61775 → 61776

Parity: odd

Prime: No

Previous Prime: 61757

Next Prime: 61781

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 5 ² × 7 × 353

Divisors: 1, 5, 7, 25, 35, 175, 353, 1765, 2471, 8825

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1111000101001111

Octal: 170517

Duodecimal: 2B8BB

Hexadecimal: f14f

Square: 3816150625

Square Root: 248.54577043273136

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) = ∑_{k=0..floor(n/2)} T(n,k), T given by A026758. A26766

Numbers which are the sums of consecutive fifth powers. A217845

Number of nondecreasing -n..n vectors of length 4 whose dot product with some lexicographically greater or equal nondecreasing -n..n vector equals 4. A226425

Number of 7Xn 0..1 arrays with every element equal to 0, 1 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. A302169

Triangular array read by rows. T(n,k) is the number of labeled digraphs on [n] with exactly k isolated strongly connected components, n>=0, 0<=k<=n. A362226

Number of nodes in rooted tree with Matula-Goebel number n. A61775

T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. A302163