Properties of the Number 851

Eight Hundred Fifty-One

Basics

Value: 850 → 851 → 852

Parity: odd

Prime: No

Previous Prime: 839

Next Prime: 853

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 23 × 37

Divisors: 1, 23, 37, 851

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101010011

Octal: 1523

Duodecimal: 5AB

Hexadecimal: 353

Square: 724201

Square Root: 29.171904291629644

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

Number of compositions (ordered partitions) of n into distinct parts. A32020

Expansion of ∏_k>=1 (1+x^k)^p(k), where p(k) is the partition function. A261049

a(n) = (3·n² - n - 2)/2. A115067

a(n) = least k >= 1 such that the remainder when 6^k is divided by k is n. A127816

Number of partitions of n such that the successive differences of consecutive parts are nondecreasing. A240026

a(n) = n*(n+9)/2. A56000

Second spoke of a hexagonal spiral. A56106

Number of integers in n-th generation of tree T(1/2) defined in Comments. A274142

Number of distinct values taken by 2²^...² (with n 2's and parentheses inserted in all possible ways). A2845

Number of subsets of {1...n} containing all prime indices of the elements. A324736