Properties of the Number 19455

Nineteen Thousand Four Hundred Fifty-Five

Basics

Value: 19454 → 19455 → 19456

Parity: odd

Prime: No

Previous Prime: 19447

Next Prime: 19457

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 1297

Divisors: 1, 3, 5, 15, 1297, 3891, 6485, 19455

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100101111111111

Octal: 45777

Duodecimal: B313

Hexadecimal: 4bff

Square: 378497025

Square Root: 139.48118152639805

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

Partial sums of A299256. A299262

Numbers n such that p(n),p(n)+6,p(n)+12,p(n)+18 are consecutive primes and p(n)=6·k+1 for some k, where p(n) denotes n-th prime. A90838

a(n) = 19·2ⁿ-1. A198276

Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 533", based on the 5-celled von Neumann neighborhood. A288980

a(n) = 1024·n - 1. A158421

a(1) = 1; if the sum of the digits of 2·a(n-1) + 1 is not yet in the sequence then a(n) = 2·a(n-1) + 1; otherwise a(n) is the sum of digits of a(n-1). A348483

Waring's problem: least positive integer requiring maximum number of terms when expressed as a sum of positive n-th powers. A18886

a(n) = 76·n² - 1. A158765

Integers n such that exactly 80 percent of the digits in base 2 are 1's. A163142

G.f. A(x) satisfies: ∑_n>=0 ( 1/A(x) - 1/(1+x)^5·n )ⁿ = 1. A317995