Properties of the Number 61421

Sixty-One Thousand Four Hundred Twenty-One

Basics

Value: 61420 → 61421 → 61422

Parity: odd

Prime: No

Previous Prime: 61417

Next Prime: 61441

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 17 × 3613

Divisors: 1, 17, 3613, 61421

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1110111111101101

Octal: 167755

Duodecimal: 2B665

Hexadecimal: efed

Square: 3772539241

Square Root: 247.83260479605988

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

Table T(n,k) read by rows which contains in row n and column k the sum of A001055(A036035(n,j)) over all column indices j where A036035(n,j) has k distinct prime factors. A93936

Numbers n>1 such that the difference between log(n) and its best rational approximation as x/y with y<=n produces a new minimum of abs(log(n)-x/y). x/y is provided as A306976/A306977. A306975

Primes of the form 2^k + k + 1. A61421