2491 is an odd 4-digits composite number following 2490
and preceding 2492 . In scientific notation, it is written as 2.491 × 10^3.
The sum of its digits is 16. It has a total of 2 prime factors and 4 positive divisors.
There are 2392 positive integers (up to 2491) that are relatively prime to 2491.
2491 has 4 divisors, whose sum is 2592
The reverse of 2491 is 1942
Previous prime number is 47
Is Prime? no
Number parity odd
Number length 4
Sum of Digits 16
Digital Root 7
Name
two thousand four hundred ninety-one
Scientific notation
2.491 × 10^3
Engineering notation
2.491 × 10^3
Prime Factorization
47 × 53
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
2491
Product of the distinct prime numbers
The prime factorization of 2491 is 47 × 53.
Since it has a total of 2 prime factors.
8 , 6 , 81 , 4 , 385 , 975 , 4573 , 6208 , 53059 , 50504 , 288731 , 125137 , 6025556 , 3695747 , 73944233 , 31623229 , 895459141 , 322106634 , 6311171503 , 6071717366
n×2
4982
n×3
7473
n×4
9964
n×5
12455
n÷2
1245.5
n÷3
830.33333333333
n÷3
622.75
n÷5
498.2
n2
6205081
n3
15456856771
n4
38503030216561
n5
95911048269453451
2 √n
49.909918853871
3 √n
13.555781994286
4 √n
7.0646952414008
5 √n
4.7783146614838
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-2490
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 2491 can be divided by 4 positive divisors.
The sum of these divisors (counting 2491) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110111011
3
Ternary
10102021
4
Quaternary
212323
5
Quinary
34431
6
Senary
15311
8
Octal
4673
10
Decimal
2491
12
Duodecimal
1537
16
Hexadecimal
9bb
20
Vigesimal
64b
36
Base36
1x7
md5
01a0683665f38d8e5e567b3b15ca98bf
sha1
82f752807893c63f06db6a25fe56160403214fb3
sha256
dc7d6256d124bcc9244d6d0e437beabded4b25d4fbf77ccb595375b8f5f1e903
sha512
856e740801bf35defc00762472a14cdd4aae90fdf63b6ba5dc04ba831c1a61cfa24a34fe85ab1791bed50668ee6049c7707b17207b5e6f6076995abed723eb57
ripemd-160
40e618dbb66e01b940a8dde3262fa900408ed6cc
Diameter
4982
Circumference
15651.414600184
Area
19493836.88453
Volume
64745530239.151
Surface area
77975347.538118
Circumference
15651.414600184
Perimeter
9964
Area
6205081
Diagonal
3522.8059838714
Surface area
37230486
Volume
15456856771
Space diagonal
4314.5385616541
Perimeter
7473
Area
2686878.8892701
Altitude
2157.269280827
Surface area
2686878.8892701
Volume
1821608039.7672
Height
1174.2686612905