Properties of the Number -1487

Four Hundred Eighty-Seven

Basics

Value: -1488 → -1487 → -1486

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 1487

Divisors: 1, 1487

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -10111001111

Octal: -2717

Duodecimal: -A3B

Hexadecimal: -5cf

Square: 2211169

Square Root: 38.561638969317684

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) = -n² + 9·n + 53. A126665

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 421", based on the 5-celled von Neumann neighborhood. A272052

Lesser of twin primes. A1359

Safe primes p: (p-1)/2 is also prime. A5385

Initial members of prime triples (p, p+2, p+6). A22004

Primes of the form 2·k² + 29. A7641

Primes that become another prime under the map 1 <-> 0 (acting on the digits: A222210), cf. A171013. A175791

Primes that divide at least one term in every Fibonacci sequence. A57

Prime triples: p; p+2 or p+4; p+6 all prime. A7529

Primes that become a different prime under the mapping 7 <=> 9. A180559