Properties of the Number 77801

Seventy-Seven Thousand Eight Hundred One

Basics

Value: 77800 → 77801 → 77802

Parity: odd

Prime: Yes

Previous Prime: 77797

Next Prime: 77813

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 77801

Divisors: 1, 77801

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 10010111111101001

Octal: 227751

Duodecimal: 39035

Hexadecimal: 12fe9

Square: 6052995601

Square Root: 278.9283062007153

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

Numerator of b(n) = -∑_k=1..n A037861(k)/((2·k)*(2·k+1)), where A037861(k) = (number of 0's) - (number of 1's) in the binary representation of k. A110625

Numbers k such that A(k+1) = A(k) + 3, where A() = A005100() are the deficient numbers. A317046

Non-balanced numbers in A015767. A77801

Denominator of b(n) = -∑_k=1..n A037861(k)/((2·k)*(2·k+1)), where A037861(k) = (number of 0's) - (number of 1's) in the binary representation of k. A110626

Lucas pseudoprimes whose reversal is prime. A164824