Properties of the Number 55556

Fifty-Five Thousand Five Hundred Fifty-Six

Basics

Value: 55555 → 55556 → 55557

Parity: even

Prime: No

Previous Prime: 55547

Next Prime: 55579

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 17 × 19 × 43

Divisors: 1, 2, 4, 17, 19, 34, 38, 43, 68, 76

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101100100000100

Octal: 154404

Duodecimal: 28198

Hexadecimal: d904

Square: 3086469136

Square Root: 235.7032032026718

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 which have only digits 5 and 6 in base 10. A256291

a(n) = a(n-1)+a(m), where m=2n-2-2^p+1 and 2^p<n-1<=2^p+1, for n >= 4. A50071

Kaprekar triples: q such that q = x + y + z and q³ = x·10²ⁿ + y·10ⁿ + z, where z < 10ⁿ and n is the number of digits in q. q is not a power of 10 (except q=1). A6887

Pseudo-Kaprekar triples: q such that if q=x+y+z, then q³=x·10ⁱ + y·10^j + z, where (y·10^j+z < 10ⁱ) and z < 10^j. A60768

Expansion of g.f. (1-5·x)/((1-x)*(1-10·x)). A93142

Numbers of the form N = a+b+c such that N³ = concat(a,b,c); a, b, c > 0. A328198

Find smallest pair (x,y) such that x² - y² = 11...1 (n times) = (10ⁿ-1)/9; sequence gives value of x. A48611

Index numbers for palindromic hexagonal numbers. A54970

a(n) = sqrt(A084004(n)). A84005

Records in A068189 (smallest number k such that n = product of nonzero digits of k, or 0 if no such k exists). A96867