Properties of the Number 43265

Forty-Three Thousand Two Hundred Sixty-Five

Basics

Value: 43264 → 43265 → 43266

Parity: odd

Prime: No

Previous Prime: 43261

Next Prime: 43271

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 × 17 × 509

Divisors: 1, 5, 17, 85, 509, 2545, 8653, 43265

Polygonal

Triangular: No

Square: No

Pentagonal: Yes

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 1010100100000001

Octal: 124401

Duodecimal: 21055

Hexadecimal: a901

Square: 1871860225

Square Root: 208.00240383226344

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

Numbers of the form m² + 1 that can be expressed in more than one way as j² + k² with j > k > 1 and gcd(j,k) = 1. A300166

a(n) = 64·n² + 1. A158686

Triangle read by rows: T(n, k) = 2ⁿ*(q^k - 1)*(q^{n - k} - 1) + 1, where q = 3. A176794

a(n) = (A001359(n+1)² - 1)/24, where A001359 = lesser of twin primes; or: pentagonal numbers (A000326) whose indices are twin ranks (A002822). A308344

Pentagonal numbers which are products of three distinct primes. A381650

Expansion of ∏_{i>=1, j>=1, k>=1} (1 + i·j*k·x^i·j*k). A318482

Sum of the digits of the n-th base 6 palindrome. A43265