Properties of the Number 12557

Twelve Thousand Five Hundred Fifty-Seven

Basics

Value: 12556 → 12557 → 12558

Parity: odd

Prime: No

Previous Prime: 12553

Next Prime: 12569

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 29 × 433

Divisors: 1, 29, 433, 12557

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 11000100001101

Octal: 30415

Duodecimal: 7325

Hexadecimal: 310d

Square: 157678249

Square Root: 112.05802068571441

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

Numbers whose multiset multisystem (A302242) is crossing. A324170

Numbers n such that φ(n)=2*φ(n-1). A171271

Number of partitions p of n such that the multiplicity of the mean of p is a part of p. A240491

Floor(1/s(n)), where s(n) = (2n+1)/(2n+2) - n·log((n+1)/n). A227721

Table read by antidiagonals upward: T(n,k) is the number of ways to move a chess queen from (1,1) to (n,k) in the first quadrant using only right, diagonal up-right, and diagonal up-left moves. A334016

Numbers k of the form (x + y)*(x² + y²) such that (x + y) and (x² + y²) are primes. A349202

Integers k > 10577 such that the 'Reverse and Add!' trajectory of k joins the trajectory of 10577. A63434

Sequence with a (1,2) Somos-4 Hankel transform. A178074

Squarefree terms of A372894 whose prime factors are neither elite (A102742) nor anti-elite (A128852). A372896

s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (odd natural numbers), t = A001950 (upper Wythoff sequence). A25114