Properties of the Number 12355

Twelve Thousand Three Hundred Fifty-Five

Basics

Value: 12354 → 12355 → 12356

Parity: odd

Prime: No

Previous Prime: 12347

Next Prime: 12373

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 5 × 7 × 353

Divisors: 1, 5, 7, 35, 353, 1765, 2471, 12355

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11000001000011

Octal: 30103

Duodecimal: 7197

Hexadecimal: 3043

Square: 152646025

Square Root: 111.15304764152893

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

Palindromic numbers in bases 4 and 8 written in base 10. A259382

Triangle read by rows: T(n,k) is the number of permutations of {1,2,...,k+n} having excedance set {1,2,...,k} (the empty set for k=0), 0 <= k <= n-1. A136126

a(n) = 2·3ⁿ - 3·2ⁿ + 1. A91344

a(n) = 15·n² - 9·n + 1. A134154

[ (3rd elementary symmetric function of 3,4,...,n+4)/(3+4+...+n+4) ]. A24191

Number of subsets of {1, ..., n} that are sum-free but not double-free. A88811

Irregular triangle read by rows: T(n,k) (n>=1, 0<=k<=n(n-1)/2) is such that Sum_k T(n,k)*q^k gives the expectation of the number of connected components in a random graph on n labeled vertices where every edge is present with probability q. A125210

a(n) = Lucas(n) concatenated with Fibonacci(n). A247337

The icosagen sequence : a(n) = A018227(n)-5, for n >= 2. A271997

Odd binary Niven numbers (A144302) k such that k/wt(k) is also an odd binary Niven number, where wt(k) = A000120(k) is the binary weight of k. A376618