Properties of the Number -2975

Nine Hundred Seventy-Five

Basics

Value: -2976 → -2975 → -2974

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 ² × 7 × 17

Divisors: 1, 5, 7, 17, 25, 35, 85, 119, 175, 425

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101110011111

Octal: -5637

Duodecimal: -187B

Hexadecimal: -b9f

Square: 8850625

Square Root: 54.543560573178574

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 symmetrical triangle sequence: T(n, k) = q^k + q^n-k - qⁿ, with q=5. A176226

Expansion of 1/sqrt((1 - x + x³)² + 4·x⁴). A375292

Expansion of e.g.f. cos(tanh(x)*exp(x)). A9092

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 417", based on the 5-celled von Neumann neighborhood. A272019

First differences of A067046. A291681

Expansion of ∏_k>=1 1 / (1 + 2^k-1*x^k). A352402

sin(tanh(x)+arcsin(x))=2·x-9/3!*x³+97/5!*x⁵-2975/7!*x⁷... A13132

5 times triangular numbers: a(n) = 5·n*(n+1)/2. A28895

Numbers m that are the hypotenuse of exactly 7 distinct integer-sided right triangles, i.e., m² can be written as a sum of two squares in 7 ways. A97101

Areas of all nondegenerate integer triangles, T, expressed as 16·area(T)². a(n) is for the triangle with sides A316841(n, 1..3). A316853