Properties of the Number 21349

Twenty-One Thousand Three Hundred Forty-Nine

Basics

Value: 21348 → 21349 → 21350

Parity: odd

Prime: No

Previous Prime: 21347

Next Prime: 21377

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 37 × 577

Divisors: 1, 37, 577, 21349

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101001101100101

Octal: 51545

Duodecimal: 10431

Hexadecimal: 5365

Square: 455779801

Square Root: 146.11296999240005

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

Ordered hypotenuses of primitive Pythagorean triangles having legs that add up to a square. A88319

Composites whose prime factorization in base 12 is an anagram of the number in base 12. A260055

Consider all ways of writing a number as p+2m² where p is 1 or a prime and m >= 0; sequence gives numbers that are expressible in at least 2 more ways than any smaller number. A16067

a(n) = A273059(4n+3). A275919

Nonprimes k such that k divides 3^k-1 - 2^k-1. A73631

Binary palindromes (cf. A006995) such that the number of contiguous palindromic bit patterns is minimal (for a given number of places). A217099

Odd numbers k such that A064989(k) is in A340151. A340091

Number of distinct integers of the form (xⁿ + yⁿ) mod n³. A366419

Least binary palindrome (cf. A006995) with n binary digits such that the number of contiguous palindromic bit patterns is minimal. A217097

Strong pseudoprimes to base 24. A20250