Properties of the Number -165649

One Hundred Sixty-Five Thousand Six Hundred Forty-Nine

Basics

Value: -165650 → -165649 → -165648

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 11 ² × 37 ²

Divisors: 1, 11, 37, 121, 407, 1369, 4477, 15059, 165649

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101000011100010001

Octal: -503421

Duodecimal: -7BA41

Hexadecimal: -28711

Square: 27439591201

Square Root: 407

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

a(n) = (14·n+1)². A134934

Squares that are the sum of 3 consecutive primes. A80665

Triangular numbers + 1 squared. A86601

Numbers k such that τ(k+1) - τ(k) = 3, where τ(k) = the number of divisors of k (A000005). A230653

Numbers n such that the sum_i (d_iⁱ) of the i-th powers of their sorted divisors d₁< d₂<...< n is prime. A180852

Final terms of rows of A077346. A77347

Squares k such that, if k has d digits, k has at least one digit in common with every other d-digit square. A173943

Perfect squares which can be written in all the four forms a²+b², a²+2·b², a²+3·b² and a²+7·b², with a > 0 and b > 0. A216682

Squares of composite numbers k that are abelian orders. A350345

a(n) = (11·n)². A17390