Properties of the Number 40515

Forty Thousand Five Hundred Fifteen

Basics

Value: 40514 → 40515 → 40516

Parity: odd

Prime: No

Previous Prime: 40507

Next Prime: 40519

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 37 × 73

Divisors: 1, 3, 5, 15, 37, 73, 111, 185, 219, 365

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1001111001000011

Octal: 117103

Duodecimal: 1B543

Hexadecimal: 9e43

Square: 1641465225

Square Root: 201.28338232452276

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

Expansion of ∏_k>=1 (1 + x^2·k-1)^k*(3·k-1/2)*(1 + x^2·k)^k*(3·k+1/2). A294839

Numbers k such that A353802(k) / σ(σ(k)) is an integer > 1, where A353802(n) = ∏_p^e||n σ(σ(p^e)). A353807

Q(n,6), where Q(m,k) is defined in A127080 and A127137. A127148

Recurrence a(1) = 1, a(2) = 5; a(n) = (a(n-1) + a(n-2))/GCD(a(n-1),a(n-2)) + 1. A349576

Number of integer partitions of n with frequency depth floor(sqrt(n)). A325252

a(n) = greatest number in row n of the array in A225485. A364810

Base-9 palindromes that start with 6. A43033

Numbers n with following property: suppose n⁶ = d1 d2 d3 ...dk in decimal; then d1! + d2! + ... + dk! is a square. A130688

Numbers k such that (13·10^k + 437)/9 is prime. A282351

Numbers k such that 455·2^k+1 is prime. A323197