Properties of the Number 4945

Four Thousand Nine Hundred Forty-Five

Basics

Value: 4944 → 4945 → 4946

Parity: odd

Prime: No

Previous Prime: 4943

Next Prime: 4951

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 5 × 23 × 43

Divisors: 1, 5, 23, 43, 115, 215, 989, 4945

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001101010001

Octal: 11521

Duodecimal: 2A41

Hexadecimal: 1351

Square: 24453025

Square Root: 70.32069396699666

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

Triangular array giving number of labeled graphs on n unisolated nodes and k=0...n*(n-1)/2 edges. A54548

Numbers of the form 9·k² + 8·k, k an integer. A218864

Triangle P, read by rows, such that P³ transforms column k of P into column k+1 of P, so that column k of P equals column 0 of P^3·k+1, where P³ denotes the matrix cube of P. A113370

Triangular array T(n,k) giving number of connected graphs with n labeled nodes and k edges (n >= 1, 0 <= k <= n(n-1)/2). A62734

MM-numbers of nesting multiset partitions. A326256

MM-numbers of capturing multiset partitions. A326255

Triangle read by rows: T(n,k) is the number of connected labeled graphs with n edges and k vertices, 1 <= k <= n+1. A343088

Number of "ON" cells after n-th stage in simple 2-dimensional cellular automaton (see Comments for precise definition). A160117

Number A(n,k) of domicule tilings of a k X n grid; square array A(n,k), n>=0, k>=0, read by antidiagonals. A239264

Expansion of ∏_k>=1 (1+x^3·k-1)^k. A262878