Properties of the Number 26519

Twenty-Six Thousand Five Hundred Nineteen

Basics

Value: 26518 → 26519 → 26520

Parity: odd

Prime: No

Previous Prime: 26513

Next Prime: 26539

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 23 × 1153

Divisors: 1, 23, 1153, 26519

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110011110010111

Octal: 63627

Duodecimal: 1341B

Hexadecimal: 6797

Square: 703257361

Square Root: 162.84655354044187

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

Let u be any string of n digits from {0,...,9}; let f(u) = number of distinct primes, not beginning with 0, formed by permuting the digits of u; then a(n) = max_u f(u). A65851

Number of partitions of 9·n-8 into parts having in decimal representation digital root 1. A156145

Irregular triangular array T read by rows: T(n, k) = T(n-1, k-2) + T(n-1, k) if (n mod 2) = 0, otherwise T(n-1, k-2) + T(n-1, k-1) + T(n-1, k), with T(n, 0) = T(n, 2·n) = 1, T(n, 1) = T(n, 2·n-1) = floor((n+1)/2). A26519

G.f. A(x) satisfies [x^2·n] A(x)^5·n = -5 and [x^2·n+1] A(x)^5·n+2 = [x^2·n+1] A(x)^5·n+3 for n >= 1. A377096