Properties of the Number 82781

Eighty-Two Thousand Seven Hundred Eighty-One

Basics

Value: 82780 → 82781 → 82782

Parity: odd

Prime: Yes

Previous Prime: 82763

Next Prime: 82787

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 82781

Divisors: 1, 82781

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10100001101011101

Octal: 241535

Duodecimal: 3BAA5

Hexadecimal: 1435d

Square: 6852693961

Square Root: 287.7168747223562

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

First term of balanced prime quartets: p(m+1)-p(m) = p(m+2)-p(m+1) = p(m+3)-p(m+2). A54800

Initial prime in set of 4 consecutive primes with common difference 6. A33451

Primes p such that p, p+6, p+12, p+18 are consecutive primes and p=6·k+5 for some k. A90834

Primes p, with k digits, such that the ∑_i=1..k (p without its i-th digit)/(its i-th digit) is a prime. A346206

a(n) = ∑_k=1..n k^ω(k). A347616

Primes p such that Euler(p, 1) is an integer multiple of Bernoulli(p + 1, 1). A341759

a(1) = 6, a(n) = smallest palindromic multiple of a(n-1) obtained by inserting digits anywhere in a(n-1). A82781