Properties of the Number 45381

Forty-Five Thousand Three Hundred Eighty-One

Basics

Value: 45380 → 45381 → 45382

Parity: odd

Prime: No

Previous Prime: 45377

Next Prime: 45389

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 7 × 2161

Divisors: 1, 3, 7, 21, 2161, 6483, 15127, 45381

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1011000101000101

Octal: 130505

Duodecimal: 22319

Hexadecimal: b145

Square: 2059435161

Square Root: 213.02816715167035

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

Fibonacci sequence beginning 3, 9. A22379

Total number of parts that are not the smallest part in all partitions of n. A182984

a(n) = round(n*φ²⁰), where φ is the golden ratio, A001622. A4955

s(k)-s(j), where the pairs (k,j) are given by A205862 and A205863, and s(k) denotes the (k+1)-st Fibonacci number. A205864

a(n) = ceiling(n*φ²⁰), where φ is the golden ratio, A001622. A4975

a(0)=1. a(n) = a(n-1)*(n+1), if n is in the sequence. a(n)= a(n-1) +1, if n is missing from the sequence. A118471

Number of binary strings of length n with no substrings equal to 0010 0110 or 1011. A164497

a(n) = Fibonacci(3n) - Fibonacci(2n). A272123

Hosoya triangle of Morgan Voyce type, read by rows. A284131

Primes congruent to {0, 1, 2} mod 7. A45381