Properties of the Number 1550

One Thousand Five Hundred Fifty

Basics

Value: 1549 → 1550 → 1551

Parity: even

Prime: No

Previous Prime: 1549

Next Prime: 1553

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 × 5 ² × 31

Divisors: 1, 2, 5, 10, 25, 31, 50, 62, 155, 310

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 11000001110

Octal: 3016

Duodecimal: A92

Hexadecimal: 60e

Square: 2402500

Square Root: 39.370039370059054

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

a(n) = n*(3·n + 7)/2. A140090

Number of integer partitions of n with an alternating permutation covering an initial interval of positive integers. A345163

a(n) = n*(5·n - 1)/2. A5476

Numbers n such that the decimal expansions of both n and n² have 0 as smallest digit and 5 as largest digit. A256631

Expansion of (1 + x + x²)/(1 - x² - 2·x³). A159288

Numbers m such that there are precisely 16 groups of order m. A295161

a(n) = floor(n*φ⁸), where φ is the golden ratio, A001622. A4923

Numbers where 5 outnumbers any other digit. A292455

Numbers of the form k*(5·k+1)/2 or k*(5·k-1)/2. A57569

Palindromic numbers in bases 3 and 9 written in base 10. A259386