Properties of the Number 47045

Forty-Seven Thousand Forty-Five

Basics

Value: 47044 → 47045 → 47046

Parity: odd

Prime: No

Previous Prime: 47041

Next Prime: 47051

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 × 97 ²

Divisors: 1, 5, 97, 485, 9409, 47045

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1011011111000101

Octal: 133705

Duodecimal: 23285

Hexadecimal: b7c5

Square: 2213232025

Square Root: 216.8985938174796

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

Numbers k such that σ(k) = ψ(k) + τ(k). A387953

If F is the Fermat point of a triangle ABC with A < B < C < 2*π/3, where AB, BC, CA, FA, FB and FC are all positive integers, then, this sequence gives the sum FA + FB + FC when gcd(a, b, c) = A351477(n). A351476

Odd numbers k, not powers of primes, such that σ(k) == 2 modulo 8 and σ(σ(k)) == 6 modulo 8. A332458

Composite numbers k+1 such that k*φ(k+1) is a perfect square. A69068

The continued fraction of the constant r > sqrt(3) such that the partial quotients equal the integer floor of the powers of r. A227233

T(n,n-3), array T as in A047040; T(n-3,n), array T given by A047050. A47045

Three-column array giving list of primitive triples for integer-sided triangles with A < B < C < 2*π/3 and such that FA, FB, FC are also integers where F is the Fermat point of the triangle. A352360