Properties of the Number 1745

One Thousand Seven Hundred Forty-Five

Basics

Value: 1744 → 1745 → 1746

Parity: odd

Prime: No

Previous Prime: 1741

Next Prime: 1747

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 5 × 349

Divisors: 1, 5, 349, 1745

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11011010001

Octal: 3321

Duodecimal: 1015

Hexadecimal: 6d1

Square: 3045025

Square Root: 41.773197148410844

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

Coordination sequence T1 for Zeolite Code LTA and ρ. A8137

Number of partitions of 2n with all subsums different from n. A6827

Number of non-biquanimous integer partitions of n. A371795

Numbers that are the sum of 3 nonzero squares in exactly 9 ways. A25329

Number of strict integer partitions of n with all distinct lengths of maximal anti-runs (decreasing by more than 1). A384880

5-Knödel numbers. A50993

Numbers n such that n·10ⁿ - 1 is prime. A59671

a(n) = ∑_k=1..n k*φ(k). A11755

a(1)=0, and a(n+1) is the position of first occurrence of a(n) in the decimal expansion of 1/π. A98319

Number of points in a square lattice covered by a circle of diameter n if the center of the circle is chosen such that the circle covers the maximum possible number of lattice points. A123690