Properties of the Number 61438

Sixty-One Thousand Four Hundred Thirty-Eight

Basics

Value: 61437 → 61438 → 61439

Parity: even

Prime: No

Previous Prime: 61417

Next Prime: 61441

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 13 × 17 × 139

Divisors: 1, 2, 13, 17, 26, 34, 139, 221, 278, 442

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1110111111111110

Octal: 167776

Duodecimal: 2B67A

Hexadecimal: effe

Square: 3774627844

Square Root: 247.86689976679017

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 n such that 243·2ⁿ-1 is prime. A50880

Those n for which A140259(n) = A002264(n+11). A140260

Number of parts in all partitions of n in which no part occurs more than five times. A320608

Number of acyclic edge covers of the complete bipartite graph K_n,2. A328890

a(0) = 1, a(1) = 5, a(2) = 13; a(n) = 2·a(n-1) + 2, n > 2. A60182

Number of steps for trajectory of n to reach 1 under the map that sends x -> x/13 if·mod 13 = 0, x -> 14x+13-(x mod 13) if·is not 0 mod 13 (for a 2nd time when n starts at 1). A61438