Properties of the Number 49801

Forty-Nine Thousand Eight Hundred One

Basics

Value: 49800 → 49801 → 49802

Parity: odd

Prime: Yes

Previous Prime: 49789

Next Prime: 49807

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 49801

Divisors: 1, 49801

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100001010001001

Octal: 141211

Duodecimal: 249A1

Hexadecimal: c289

Square: 2480139601

Square Root: 223.16137658654108

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 vertices among all distinct circles that can be constructed from the 3 vertices and the equally spaced 3·n points placed on the sides of an equilateral triangle when every pair of the 3 + 3·n points are connected by a circle and where the points lie at the ends of the circle's diameter. A372731

Primes p such that p = q² + 8·r² where q and r are also primes. A260556

Lexicographically largest increasing sequence of primes for which the continued square root map (see A257574) produces π. A257582

First member of a prime quadruple in a p²+p-1 progression. A57325

Numbers k such that 10^k + 3·R_k + 4 is prime, where R_k = 11...1 is the repunit (A002275) of length k. A102932

Primes of the form (k²+4)/5. A245042

Let p run through the primes; write p in base 10 and then interpret it in base 128 getting a number q; if q is prime then adjoin q to the sequence. A90718

Primes of the form 20·k² + 36·k + 17. A154419

Primes p such that sum of squares of even-position digits equals the sum of squares of odd-position digits of p. A76168

Expansion of g.f. A(x) satisfying A(x) = A( x²*(1+x)⁴ ) / (x*(1+x)³). A369547