Properties of the Number -1551

Five Hundred Fifty-One

Basics

Value: -1552 → -1551 → -1550

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

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

Square array A(n, k) = A246278(1+n, k) - 2·A246278(n, k), read by falling antidiagonals, where A246278 is the prime shift array. A372562

G.f. satisfies A(x) = 1 + x·A(x) / (1 + x)⁴. A365083

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 337", based on the 5-celled von Neumann neighborhood. A271288

L.g.f.: log(∏_k>=1 (1 + x^k/(1 - x))) = ∑_k>=1 a(k)*x^k/k. A307761

a(n) = 13 + 12·n - n². A136316

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