Properties of the Number 20477

Twenty Thousand Four Hundred Seventy-Seven

Basics

Value: 20476 → 20477 → 20478

Parity: odd

Prime: Yes

Previous Prime: 20443

Next Prime: 20479

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 20477

Divisors: 1, 20477

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100111111111101

Octal: 47775

Duodecimal: BA25

Hexadecimal: 4ffd

Square: 419307529

Square Root: 143.09786860746738

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

Sum of squares of the first n primes. A24450

Luhn primes: primes p such that p + (p reversed) is also a prime. A61783

Primes that are the sum of the squares of the first k primes for some k. A98562

Primes at which the difference pattern X24Y (X and Y >= 6) occurs in A001223. A52163

Expansion of (1 - x + 3·x²)/((1-x)*(1-2·x)). A154117

Sum of the smallest parts of all compositions of n into distinct parts. A336902

Sum of n-th prime squared and n-th perfect square. A106587

Primes in the chain of repeated application of x->2·x+3, starting at x=2. A172156

Primes of the form k² - prime(k). A188831

Primes having Fibonacci prime gaps to both neighbor primes. A353135