Properties of the Number 61999

Sixty-One Thousand Nine Hundred Ninety-Nine

Basics

Value: 61998 → 61999 → 62000

Parity: odd

Prime: No

Previous Prime: 61991

Next Prime: 62003

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 7 × 17 × 521

Divisors: 1, 7, 17, 119, 521, 3647, 8857, 61999

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111001000101111

Octal: 171057

Duodecimal: 2BA67

Hexadecimal: f22f

Square: 3843876001

Square Root: 248.99598390335535

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

Nonnegative values·of solutions (x, y) to the Diophantine equation x²+(x+521)² = y². A129725

Numbers k such that k!*2^k + 1 is prime. A256594

a(n) is the least number k such that the sum of n² consecutive primes starting at prime(k) is a square. A357813

a(n) = 2·a(n-1)² - 2·a(n-2)² with a(0) = 0, a(1) = 1. A61999