Properties of the Number 2975

Two Thousand Nine Hundred Seventy-Five

Basics

Value: 2974 → 2975 → 2976

Parity: odd

Prime: No

Previous Prime: 2971

Next Prime: 2999

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

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

Sum over all partitions of n of the LCM of the parts. A181844

Numbers k such that σ(k) = σ(k-1). A231546

Numbers k with the property that it is possible to write the base 2 expansion of k as concat(a₂,b₂), with a₂>0 and b₂>0 such that, converting a₂ and b₂ to base 10 as a and b, we have σ(a) + σ (b) = σ(k) - k. A258813

7th power analog of Keith numbers. A281918

Expansion of 1/((1-x)²*(1-x²)²*(1-x³)). A97701

Number of integer partitions of n having at most one permutation with all equal run-lengths. A383092

16·Area² of integer triangles [A070080(n),A070081(n),A070082(n)]. A135622