1445 is an odd 4-digits composite number following 1444
and preceding 1446 . In scientific notation, it is written as 1.445 × 10^3.
The sum of its digits is 14. It has a total of 3 prime factors and 6 positive divisors.
There are 1088 positive integers (up to 1445) that are relatively prime to 1445.
1445 has 6 divisors, whose sum is 1842
The reverse of 1445 is 5441
Previous prime number is 17
Is Prime? no
Number parity odd
Number length 4
Sum of Digits 14
Digital Root 5
Name
one thousand four hundred forty-five
Scientific notation
1.445 × 10^3
Engineering notation
1.445 × 10^3
Prime Factorization
5 × 17 × 17
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
85
Product of the distinct prime numbers
The prime factorization of 1445 is 5 × 17 × 17.
Since it has a total of 3 prime factors.
10 , 5 , 83 , 54 , 822 , 771 , 8475 , 5521 , 57551 , 34259 , 433976 , 634388 , 2833035 , 7686739 , 45083596 , 15836149 , 842097824 , 371820837 , 6227846905 , 3581525810
n×2
2890
n×3
4335
n×4
5780
n×5
7225
n÷2
722.5
n÷3
481.66666666667
n÷3
361.25
n÷5
289
n2
2088025
n3
3017196125
n4
4359848400625
n5
6299980938903125
2 √n
38.013155617496
3 √n
11.30548719328
4 √n
6.1654809721137
5 √n
4.285224403011
6 divisors
τ
Total Divisors
6
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-1444
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.16666666666667
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
1
Returns the nth root of the product of n divisors
H
Harmonic Mean
6
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1445 can be divided by 6 positive divisors.
The sum of these divisors (counting 1445) is 1, the average is 0.16666666666667.
Base
System
Value
2
Binary
10110100101
3
Ternary
1222112
4
Quaternary
112211
5
Quinary
21240
6
Senary
10405
8
Octal
2645
10
Decimal
1445
12
Duodecimal
a05
16
Hexadecimal
5a5
20
Vigesimal
3c5
36
Base36
145
md5
b265ce60fe4c5384e622b09eb829b8df
sha1
b8509b02cc4c001875e9fcb20f3c7c0df970b5a0
sha256
146c09db1bc3d53de430b2539d042fc870a84996071db58de8b8cf2099bbebc6
sha512
ba3eda3088ddadf7fc68953b02601a1398a083cdf4b52a32d31f53aa82ac48904a0fc6264e5876719fb8f01ae41bcc38c8581086abb14d607dcd02bf3c75a244
ripemd-160
b76e93b5e4585849f5643463031ae54f76c70445
Diameter
2890
Circumference
9079.2027688745
Area
6559724.0005118
Volume
12638401574.319
Surface area
26238896.002047
Circumference
9079.2027688745
Perimeter
5780
Area
2088025
Diagonal
2043.5385976291
Surface area
12528150
Volume
3017196125
Space diagonal
2502.813416937
Perimeter
4335
Area
904141.3468685
Altitude
1251.4067084685
Surface area
904141.3468685
Volume
355579973.35955
Height
681.17953254304