Properties of the Number 56511

Fifty-Six Thousand Five Hundred Eleven

Basics

Value: 56510 → 56511 → 56512

Parity: odd

Prime: No

Previous Prime: 56509

Next Prime: 56519

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 7 × 13 × 23

Divisors: 1, 3, 7, 9, 13, 21, 23, 27, 39, 63

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1101110010111111

Octal: 156277

Duodecimal: 28853

Hexadecimal: dcbf

Square: 3193493121

Square Root: 237.72042402789037

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

Numbers k such that ω(k) = 4 and the largest prime factor of k equals the sum of its remaining distinct prime factors, where ω(k) = A001221(k). A383728

Sum of terms in n-th row of A081491. A81492

Molien series for group G_1,3 of order 2304. A51461

Molien series for group G_1,3⁸ of order 4608. A51463

Numbers m such that both m²-1 and m² are refactorable numbers (A033950) and that m² has more divisors than m²-1. A342970

a(n) = φ(C(n)) / gcd(C(n)-1, φ(C(n))), where C(n) is the n-th Cullen number. A195418

Number of nonempty subsets of {1,2,...,n} in which exactly 1/3 of the elements are <= (n-2)/3. A48017

Number of nonempty subsets of {1,2,...,n} in which exactly 1/3 of the elements are <= (n-3)/3. A48028

Smallest possible largest number in a 3 by n average array where repetitions are not allowed without diagonals. A195753

Triangle, read by rows, that transforms rows into diagonals in the table of coefficients of successive iterations of x+x² (cf. A122888). A166900