Properties of the Number 26557

Twenty-Six Thousand Five Hundred Fifty-Seven

Basics

Value: 26556 → 26557 → 26558

Parity: odd

Prime: Yes

Previous Prime: 26539

Next Prime: 26561

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 26557

Divisors: 1, 26557

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110011110111101

Octal: 63675

Duodecimal: 13451

Hexadecimal: 67bd

Square: 705274249

Square Root: 162.96318602678338

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 there are exactly four biquadratefree powerful numbers (A338325) between k² and (k+1)². A338391

Primes that remain prime through 4 iterations of function f(x) = 9x + 4. A23325

2·a(n) is the start of 3 consecutive numbers (even-odd-even) that are sums of divisors, i.e., terms of A000203. A342555

Primes formed from concatenation of PrimePi(n) and prime(n). A236551

a(n) = smallest prime q such that ∑_{primes p <= q} 1/sqrt(p) >= n. A292775

Number of n X 2 arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 n X 2 array. A219708

Primes p such that 10p + 1, 100p + 1 and 1000p + 1 are also primes. A243962

Number of nX3 0..1 arrays with every element unequal to 0, 1, 2, 4, 7 or 8 king-move adjacent elements, with upper left element zero. A316540

Primes p whose reverse q is a semiprime, and of p+q and its reverse one is a prime and the other is a semiprime. A350781

Numbers k such that 30·k - 1, 30·k + 1, 30·k² - 1 and 30·k² + 1 are all prime. A359184