Properties of the Number 1551

One Thousand Five Hundred Fifty-One

Basics

Value: 1550 → 1551 → 1552

Parity: odd

Prime: No

Previous Prime: 1549

Next Prime: 1553

Digit Sum: 12

Digital Root: 3

Palindrome: Yes

Factorization: 3 × 11 × 47

Divisors: 1, 3, 11, 33, 47, 141, 517, 1551

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11000001111

Octal: 3017

Duodecimal: A93

Hexadecimal: 60f

Square: 2405601

Square Root: 39.382737335030434

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 Golomb rulers of length n. A169942

Numbers that are palindromic in bases 10 and 15. A29970

Number of (necessarily strict) integer partitions of n with no two consecutive parts divisible. A328171

Generalized 30-gonal (or triacontagonal) numbers: m*(14·m - 13) with m = 0, +1, -1, +2, -2, +3, -3, ... A316729

a(n) = A005449(n) - 1, where A005449 = second pentagonal numbers. A95794

Numbers n such that 97 is the largest prime factor of n² - 1. A181470

Number of strict integer partitions of n containing some three possibly equal parts (a,b,c) such that a + b = c. A variation of sum-full strict partitions. A363226

Number of fully normal integer partitions of n. A317491

a(n) = n*(7·n² - 1)/6. A4126

Number T(n,k) of equivalence classes of ways of placing k 2 X 2 tiles in an n X 6 rectangle under all symmetry operations of the rectangle; irregular triangle T(n,k), n>=2, 0<=k<=3·floor(n/2), read by rows. A238550