Properties of the Number 52650

Fifty-Two Thousand Six Hundred Fifty

Basics

Value: 52649 → 52650 → 52651

Parity: even

Prime: No

Previous Prime: 52639

Next Prime: 52667

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ⁴ × 5 ² × 13

Divisors: 1, 2, 3, 5, 6, 9, 10, 13, 15, 18

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100110110101010

Octal: 146652

Duodecimal: 26576

Hexadecimal: cdaa

Square: 2772022500

Square Root: 229.4558781116753

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

Tritriangular numbers: a(n) = binomial(binomial(n,2),2) = n*(n+1)*(n-1)*(n-2)/8. A50534

a(n) = n²*(n² + 1)/2. A37270

Triangular numbers which are products of triangular numbers larger than 1. A68143

A partition product of Stirling₂ type [parameter k = -5] with biggest-part statistic (triangle read by rows). A157397

Triangle read by rows: T(n, k) = S2[3,1](n, k)*k! with the Sheffer triangle S2[3,1] = (exp(x), exp(3·x) -1) given in A282629. A284861

Triangular numbers whose reverse is a square (possibly with fewer digits). A179889

Smallest triangular number which is a multiple (>1) of the n-th triangular number. A68084

The least number k such that there are n different representations of k as the difference of two positive triangular numbers. A136108

Triangular numbers that are hypotenuse and a leg of a Pythagorean triple. A213188

Numbers k such that ∑_{d divides k} σ(d)/φ(d) is an integer. A68991