Properties of the Number 9556

Nine Thousand Five Hundred Fifty-Six

Basics

Value: 9555 → 9556 → 9557

Parity: even

Prime: No

Previous Prime: 9551

Next Prime: 9587

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 2389

Divisors: 1, 2, 4, 2389, 4778, 9556

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10010101010100

Octal: 22524

Duodecimal: 5644

Hexadecimal: 2554

Square: 91317136

Square Root: 97.75479527879949

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

a(n) = (7·4ⁿ - 4)/3. A83597

a(1)=1, a(n) = a(n-1) + (p-1)*p^n/2-1 if n is even, else a(n) = a(n-1) + p^(n-1/2), where p=4. A133628

a(n) = (7·2ⁿ - 4(-1)ⁿ)/3. A83595

Expansion of (1+3x)/((1-x)(1-4x²)). A97164

Number of integer partitions of n whose semi-sums cover an interval of positive integers. A367402

Numbers m such that 18·m + 1, 36·m + 1, 108·m + 1, and 162·m + 1 are all primes. A372188

a(n) = 8·n² - 7·n + 1. A125201

Binomial transform of A169609. A168673

Positive integers that have exactly nine representations of the form 1 + p1 * (1 + p2* ... * (1 + p_j)...), where [p1, ..., p_j] is a (possibly empty) list of distinct primes. A317399

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 74 ones. A31842