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Properties of the Number 51649

Fifty-One Thousand Six Hundred Forty-Nine

Basics

Value: 51648 → 51649 → 51650

Parity: odd

Prime: No

Previous Prime: 51647

Next Prime: 51659

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 13 × 29 × 137

Divisors: 1, 13, 29, 137, 377, 1781, 3973, 51649

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 1100100111000001

Octal: 144701

Duodecimal: 25A81

Hexadecimal: c9c1

Square: 2667619201

Square Root: 227.26416347501865

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

Ordered hypotenuses of primitive Pythagorean triangles having legs that add up to a square. A88319
Number of vertices among all distinct circles that can be constructed from a point on the origin and n equally spaced points on each of the +x,-x,+y,-y coordinates axes when each pair of points is connected by a circle and where the points lie at the ends of the circles' diameter. A362233
Number of partitions of 3n into exactly 5 parts. A256314
Number of partitions of 4n into exactly 5 parts. A256316
Number of 6-ary rooted trees with n nodes and height exactly 5. A36643
a(n-1)*a(n-6) + a(n-2)*a(n-7) + a(n-3)*a(n-8) + a(n-4)*a(n-9), with a(k<8) = 1. A118334
Numbers having four 7's in base 9. A43484
Number of walks within N3 (the first octant of Z3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, 1), (-1, 1, -1), (1, -1, 1), (1, 0, 0)}. A148036
T(n,k)=Number of nXk arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..1 nXk array. A219502
Primes of the form 2310·p + 1 where p is a prime. A51649