Properties of the Number 55646

Fifty-Five Thousand Six Hundred Forty-Six

Basics

Value: 55645 → 55646 → 55647

Parity: even

Prime: No

Previous Prime: 55639

Next Prime: 55661

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 27823

Divisors: 1, 2, 27823, 55646

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1101100101011110

Octal: 154536

Duodecimal: 28252

Hexadecimal: d95e

Square: 3096477316

Square Root: 235.8940440112891

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) = ∑_k=1..n 2^k * σ(k), where σ(k) = A000203(k). A324915

G.f. satisfies A(x) = 1 + x³ + x·A(x)⁴. A367043

Numbers k whose decimal representation ends with that of π(k) (where π denotes the prime counting function A000720). A306572

Numbers k such that the value π(k), the number of primes <= k, can be obtained deleting some of the repeating adjacent digits of k. A113898

Number of n X 4 0..1 arrays with every element unequal to 0, 2, 3 or 5 king-move adjacent elements, with upper left element zero. A304006

a(1)=1; for n>1, define a sequence {b(m), m >= 1} by b(1)=n b(2)=13, and b(m) = A020639(b(m-2)) + A006530(b(m-1)); then a(n) is the number of terms in that sequence before the first of the infinite string of 4s. A271720

Integers in base 15 with each base 15 digit represented by 2 decimal digits. A55646