Properties of the Number 497

Four Hundred Ninety-Seven

Basics

Value: 496 → 497 → 498

Parity: odd

Prime: No

Previous Prime: 491

Next Prime: 499

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 7 × 71

Divisors: 1, 7, 71, 497

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 111110001

Octal: 761

Duodecimal: 355

Hexadecimal: 1f1

Square: 247009

Square Root: 22.293496809607955

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

Central polygonal numbers (the Lazy Caterer's sequence): n(n+1)/2 + 1; or, maximal number of pieces formed when slicing a pancake with n cuts. A124

Number of partitions of n into an odd number of parts. A27193

Number of graphs with n edges. A664

a(0) = 1, a(n) = sum of digits of all previous terms. A4207

Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n)², where a(0) = 1, a(1) = 2, b(0) = 3, b(1) = 4, b(2) = 5, and (a(n)) and (b(n)) are increasing complementary sequences. A296245

Number of strings over a 5 symbol alphabet with adjacent symbols differing by three or less. A126473

Numbers whose sum of divisors is a square. A6532

Numbers k such that (k! + 3)/3 is prime. A89085

Pentanacci numbers: a(n) = a(n-1) + a(n-2) + a(n-3) + a(n-4) + a(n-5) with a(0) = a(1) = a(2) = a(3) = a(4) = 1. A322

Partial sums of A299255. A299261