Properties of the Number 30561

Thirty Thousand Five Hundred Sixty-One

Basics

Value: 30560 → 30561 → 30562

Parity: odd

Prime: No

Previous Prime: 30559

Next Prime: 30577

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 61 × 167

Divisors: 1, 3, 61, 167, 183, 501, 10187, 30561

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 111011101100001

Octal: 73541

Duodecimal: 15829

Hexadecimal: 7761

Square: 933974721

Square Root: 174.8170472236618

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=1..n+1 A027960(n+1, n+1+k). A27974

a(n) = prime(n) * ∑_i=1..n prime(i). A143215

Inverse binomial transform of A014217. A142585

Index values for new maxima in A065925. A65926

Integers n > 10563 such that the 'Reverse and Add!' trajectory of n joins the trajectory of 10563. A63064

Row sums of triangle A178239. A178240

a(n) = a(n-1) + a(n-2) - 2^n-1 with a(0)=a(2)=0, a(1)=-a(3)=1, a(4)=-5. A227200

a(n) = ∑_{k=floor((n+2)/2)..n} T(n, k), T given by A026998. A27009

Duplicate of A027974. A27983

The sum of a triangular array made from a negative 6-fold permutation product. A105156