Properties of the Number 11156

Eleven Thousand One Hundred Fifty-Six

Basics

Value: 11155 → 11156 → 11157

Parity: even

Prime: No

Previous Prime: 11149

Next Prime: 11159

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ² × 2789

Divisors: 1, 2, 4, 2789, 5578, 11156

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101110010100

Octal: 25624

Duodecimal: 6558

Hexadecimal: 2b94

Square: 124456336

Square Root: 105.62196741208714

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

Global ranks of terms of A057122: tells which terms of A014486 form rooted plane binary trees also when interpreted as codes for ordinary rooted planar trees. A57123

Numbers k such that the decimal expansions of both k and k² have 1 as smallest digit and 6 as largest digit. A257197

Number of partitions of n containing a clique of size 3. A183560

a(n) = n³ - 2·n² + 2·n + 1. A188947

Smallest even fundamental discriminant k such that h(-k) = 2n, where h(D) is the class number of the quadratic field with discriminant D; or 0 if no such k exists. A344072

a(n) is the least number whose fifth power is an n-digit fifth power which has the maximum sum of digits (A374025(n)). A379650

G.f.: 1/(1 - x/(1+2·x - x³/(1+2·x² - x⁵/(1+2·x³ - x⁷/(1+2·x⁴ - x⁹/(1 - ...)))))), a continued fraction. A275761

G.f. A(x) satisfies A(x) = 1 / (1 - x - x * (1 + x + x² + x³ + x⁴) * A(x⁵)). A367658

a(n) = ∑_k=1..n k·rad(k). A350996

a(n) is the smallest integer > a(n-1) such that a(n) shares no digit with a(n-1) and c=a(n-1)+a(n), and also a(n-1) shares no digit with c. A166461