Properties of the Number 21153

Twenty-One Thousand One Hundred Fifty-Three

Basics

Value: 21152 → 21153 → 21154

Parity: odd

Prime: No

Previous Prime: 21149

Next Prime: 21157

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 3 × 11 × 641

Divisors: 1, 3, 11, 33, 641, 1923, 7051, 21153

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101001010100001

Octal: 51241

Duodecimal: 102A9

Hexadecimal: 52a1

Square: 447449409

Square Root: 145.4407095692262

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

Matrix cube of triangle A104980. A104990

a(n) is the number of labeled rooted unordered binary trees T where the nodes are labeled with distinct positive integers, the root has label n, each parent label equals the sum of its children labels, and T cannot be extended. A348850

Numbers n with property that for each single digit d of n, we can also see the decimal expansion of the d-th prime as a substring of n. Also n may not contain any zero digits. A135015

Base 9 digits are, in order, the first n terms of the periodic sequence with initial period 3,2,0,1. A37791

Number of n X 2 arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 n X 2 array. A219846

T(2n-1,n), where T is the array defined in A025564. A25569

a(n) = T(n,[ n/2 ]+1), where T is the array defined in A025564. A25576

Decimal expansion of 1/149. A21153