Properties of the Number 69161

Sixty-Nine Thousand One Hundred Sixty-One

Basics

Value: 69160 → 69161 → 69162

Parity: odd

Prime: No

Previous Prime: 69151

Next Prime: 69163

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 23 × 31 × 97

Divisors: 1, 23, 31, 97, 713, 2231, 3007, 69161

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000111000101001

Octal: 207051

Duodecimal: 34035

Hexadecimal: 10e29

Square: 4783243921

Square Root: 262.9847904347322

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

The Gould numbers. A40027

Triangle read by rows. The definition is by diagonals. The r-th diagonal from the right, for r >= 0, is given by b(0) = b(1) = 1; b(n+1) = ∑_k=0..n binomial(n+2,k+r)*a(k). A121207

Triangle read by rows: T(n,k) is the number of set partitions of {1,2,...,n} in which the size of the last block is k, 1<=k<=n; the blocks are ordered with increasing least elements. A124496

Eigentriangle of the binomial matrix. A186020

a(n) = ∑_{k=0..floor(n/3)} binomial(n,3·k)*binomial(4·k,k)/(3·k+1). A226974

a(n) = a(n-1) + a(n-1-(number of odd terms so far)). A7604

Triangle read by rows, (1 / ((-1)*A129184·A007318 + I)) - I, I = Identity matrix. A160185

Numbers n such that no group of order n can be a central factor. A69161