Properties of the Number 74801

Seventy-Four Thousand Eight Hundred One

Basics

Value: 74800 → 74801 → 74802

Parity: odd

Prime: No

Previous Prime: 74797

Next Prime: 74821

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 131 × 571

Divisors: 1, 131, 571, 74801

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10010010000110001

Octal: 222061

Duodecimal: 37355

Hexadecimal: 12431

Square: 5595189601

Square Root: 273.497714798497

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 y such that 19·y² + 81 is a square. A167709

a(n) = n⁴ + 2·n³ + 4·n² + 3·n + 1 = ((n+1)⁵+n⁵) / (2·n+1). A72025

a(n) is the number of 5 element sets of distinct integer-sided trapezoids whose base angles are 60 degrees that fill an equilateral triangular grid of side n units formed by directly binary space partitioning 3-trapezoid sets without forming 4-trapezoid sets. A391203

Subsequence of A167709 whose indices are congruent to 4 mod 5, i.e., a(n) = A167709(5·n+4). A167825

a(n) is the sum of the n-th row of the triangle formed by replacing each m in Pascal's triangle with σ(m). A74801

Number of nX4 0..1 arrays with every element both equal and not equal to some elements at offset (-1,0) (-1,1) (0,-1) (0,1) (1,-1) or (1,0), with upper left element zero. A278173