Properties of the Number 49105

Forty-Nine Thousand One Hundred Five

Basics

Value: 49104 → 49105 → 49106

Parity: odd

Prime: No

Previous Prime: 49103

Next Prime: 49109

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 5 × 7 × 23 × 61

Divisors: 1, 5, 7, 23, 35, 61, 115, 161, 305, 427

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1011111111010001

Octal: 137721

Duodecimal: 24501

Hexadecimal: bfd1

Square: 2411301025

Square Root: 221.5964801164495

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

Number of permutations satisfying -k <= p(i) - i <= r and p(i) - i not in I, i=1..n, with k=1, r=5, I={1,3}. A79962

NSW pseudoprimes: odd composite numbers k such that A002315((k-1)/2) == 1 (mod k). A330276

Composite squarefree numbers k such that p+1 divides k-1 for any prime p dividing k. A225711

Intersection of A099011 and A327651. A327652

Count of interior bounded regions in a regular 2n-sided polygon dissected by all diagonals parallel to sides. A165217

The number of tiles inside a regular n-gon created by diagonals that run from each of the n vertices to the n-2 midpoints of opposite edges. A320422

Odd composite integers m such that U(m)² == 1 (mod m) and V(m) == 5 (mod m), where U(m) and V(m) are the m-th generalized Lucas and Pell-Lucas numbers of parameters a=5 and b=-1, respectively. A337628

Sequence a(n) = (1 + A007805(n))/2, appearing in a certain touching problem for three circles and a chord, together with A007805. A246641

a(n) is the least integer k such that k/Fibonacci(n) > 1/4. A293552

Expansion of -1/((1 - x)*(1 - x² + 4·x³)). A175714