Properties of the Number 51420

Fifty-One Thousand Four Hundred Twenty

Basics

Value: 51419 → 51420 → 51421

Parity: even

Prime: No

Previous Prime: 51419

Next Prime: 51421

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 5 × 857

Divisors: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1100100011011100

Octal: 144334

Duodecimal: 25910

Hexadecimal: c8dc

Square: 2644016400

Square Root: 226.75978479439425

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

Mixed partitions of n. A2096

Numbers n such that Lucas(prime(n)) is prime, where Lucas = A000032. A120561

Number of tilings of a 6 X n rectangle using V (2m+1)-ominoes (m >= 0) in standard orientation. A322499

Indices of primes in sequence defined by A(0) = 29, A(n) = 10·A(n-1) - 11 for n > 0. A101968

Sum of 1/a(n)² approaches sqrt(3) with partial sums staying below. A216245

Numbers k such that k is the average of four consecutive primes k-7, k-1, k+1 and k+7. A258879

Number of tilings of an n X n square using V (2m+1)-ominoes (m >= 0) in standard orientation. A322495

Ooguri-Vafa invariants of disk domain wall degeneracies for brane I in the O(K) -> P¹ X P¹ geometry. A61613

Number A(n,k) of tilings of a k X n rectangle using V (2m+1)-ominoes (m >= 0) in standard orientation; square array A(n,k), n>=0, k>=0, read by antidiagonals. A322494

Numbers k such that A000081(k) is prime. A51420