Properties of the Number -1457

Four Hundred Fifty-Seven

Basics

Value: -1458 → -1457 → -1456

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 31 × 47

Divisors: 1, 31, 47, 1457

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10110110001

Octal: -2661

Duodecimal: -A15

Hexadecimal: -5b1

Square: 2122849

Square Root: 38.17066936798463

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

Expansion of (-1+3·x)/(5·x² + 1 - 2·x). A116484

Expansion of 1 / ∑_{k in Z} x^k / (1 - x^5·k+2). A375063

Sum of logarithmic numbers. A2748

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 483", based on the 5-celled von Neumann neighborhood. A272346

Second pentagonal numbers: a(n) = n*(3·n + 1)/2. A5449

Number of partitions of n into parts 5k+2 or 5k+3. A3106

a(n) = 2·n² - 1. A56220

The "comma sequence": the lexicographically earliest sequence of positive numbers with the property that the sequence formed by the pairs of digits adjacent to the commas between the terms is the same as the sequence of successive differences between the terms. A121805

a(0)=1, a(n) = 3·a(n-1) + 2; a(n) = 2·3ⁿ - 1. A48473

a(n) = n + floor(n²/2). A74148