Properties of the Number 47005

Forty-Seven Thousand Five

Basics

Value: 47004 → 47005 → 47006

Parity: odd

Prime: No

Previous Prime: 46997

Next Prime: 47017

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 5 × 7 × 17 × 79

Divisors: 1, 5, 7, 17, 35, 79, 85, 119, 395, 553

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1011011110011101

Octal: 133635

Duodecimal: 23251

Hexadecimal: b79d

Square: 2209470025

Square Root: 216.80636522021211

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

G.f. A(x) satisfies: A(x) = 1 - ∑_k=1..4 (x·A(x))^k. A337513

Numbers n such that prime(n) contains a substring of all the prime digits in order, i.e., "2357". A295708

Number of distinct ways of expressing n using only addition, multiplication (with all factors greater than 1), necessary parentheses, and the number 1. A373446

a(n) = ceiling(10000·log₂(n)). A4270

Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 1001-1111-1001 pattern in any orientation. A146929

T(n,n-3), array T given by A047000. A47005