Properties of the Number 74821

Seventy-Four Thousand Eight Hundred Twenty-One

Basics

Value: 74820 → 74821 → 74822

Parity: odd

Prime: Yes

Previous Prime: 74797

Next Prime: 74827

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 74821

Divisors: 1, 74821

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10010010001000101

Octal: 222105

Duodecimal: 37371

Hexadecimal: 12445

Square: 5598182041

Square Root: 273.53427573157995

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

Primes for which only three iterations of 'Prime plus its digit sum equals a prime' are possible. A48525

Primes that remain prime through 4 iterations of the function f(x) = 9x + 8. A23326

Value of C in y = x² + 9x + C such that y is prime for all x = 0 to 5. A97437

Centered 20-gonal (or icosagonal) primes. A264845

Numbers k such that τ(k) = τ(2k+1). A74821