Properties of the Number 49005

Forty-Nine Thousand Five

Basics

Value: 49004 → 49005 → 49006

Parity: odd

Prime: No

Previous Prime: 49003

Next Prime: 49009

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ⁴ × 5 × 11 ²

Divisors: 1, 3, 5, 9, 11, 15, 27, 33, 45, 55

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1011111101101101

Octal: 137555

Duodecimal: 24439

Hexadecimal: bf6d

Square: 2401490025

Square Root: 221.37072977247917

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

Intersection of A228058 and A260021. A354362

Triangle of coefficients, read by rows, where T(n,k) is the coefficient of xⁿ*y^k in f(x,y) that satisfies f(x,y) = (1+x) - x²*(1+x)³ + xy·f(x,y)³. A86634

Odd numbers k that divide φ(k)*σ(k). A15706

Numbers k for which the quotient q(k)=(k+rev(k))/abs(k-rev(k)) is an integer. A87993

Numbers k such that k*σ(k)*σ(σ(k)) is a square. A116004

a(n) is the conjectured largest number such that both a(n) and a(n) - n are 11-smooth numbers, or 0 if no such number exists. a(n) can be less than n. A392256

Numbers n such that n*φ(n-1) is a perfect square. A69069

Odd numbers of the form (m·k)²/(m²-k²) for distinct integers m and k. A259288

Numbers k such that R(k)/k is of the form (m + 1)/m, where R(k) is the digital reversal of k. A376259

a(n) = n*(4n² - 1)². A69073