Properties of the Number 84521

Eighty-Four Thousand Five Hundred Twenty-One

Basics

Value: 84520 → 84521 → 84522

Parity: odd

Prime: Yes

Previous Prime: 84509

Next Prime: 84523

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 84521

Divisors: 1, 84521

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: 10100101000101001

Octal: 245051

Duodecimal: 40AB5

Hexadecimal: 14a29

Square: 7143799441

Square Root: 290.7249559291393

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 that are the sum of nine fifth powers in three or more ways. A345620

Numbers that are the sum of nine fifth powers in exactly three ways. A346338

T(n,k)=Number of nXk 0..7 arrays with no element equal to another at a city block distance of exactly two, and new values 0..7 introduced in row major order. A222894

Number of n X 3 0..7 arrays with no element equal to another at a city block distance of exactly two, and new values 0..7 introduced in row major order. A222892

Number of nX4 0..7 arrays with no element equal to another at a city block distance of exactly two, and new values 0..7 introduced in row major order. A222893

Numbers a > 0 such that the Diophantine equation a + b² = c³ has integer solutions b and c. A106265

An infinite juggling sequence of three balls: successively larger 'prime' ground-state 3-ball site swaps listed in lexicographical order. A subset of A084511. A84521

Greatest product of two primes made up together of digits 0 to n once. A133149