Properties of the Number 20549

Twenty Thousand Five Hundred Forty-Nine

Basics

Value: 20548 → 20549 → 20550

Parity: odd

Prime: Yes

Previous Prime: 20543

Next Prime: 20551

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 20549

Divisors: 1, 20549

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 101000001000101

Octal: 50105

Duodecimal: BA85

Hexadecimal: 5045

Square: 422261401

Square Root: 143.34922392534952

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

Primes p such that continued fraction of (1 + sqrt(p))/2 has period 15: primes in A146338. A146360

Primes which can be expressed as sum of distinct powers of 4. A77718

Sum of the prime parts in the partitions of n into 7 parts. A309468

Sums of 5 distinct powers of 4. A38473

Primes congruent to 17 mod 59. A142744

Primes 8k + 5 preceding the maximal gaps in A269513. A269514

Expansion of ∑_k>=0 x^k² / ∏_j=1..k (1 - x^j)^j. A318771

Leading diagonal of triangle in A072467. A72468

Lesser of a twin-prime pair where both are expressible as the sum of two triangular numbers. A118638

Primes of form a²+b² such that a⁴+b⁴ and a⁸+b⁸ are primes. A182313