491 (number)

491 is an odd 3-digits prime number following 490 and preceding 492. In scientific notation, it is written as 4.91 × 10^2. The sum of its digits is 14. It has a total of 1 prime factors and 2 positive divisors. There are 490 positive integers (up to 491) that are relatively prime to 491.

Interesting facts

Basic properties

Name

Name four hundred ninety-one

Notation

Scientific notation 4.91 × 10^2
Engineering notation 4.91 × 10^0

Prime Factorization of 491

Prime Factorization 491

Composite number
ω Distinct Factors 1
Total number of distinct prime factors
Ω Total Factors 1
Total number of prime factors
rad Radical 491
Product of the distinct prime numbers

The prime factorization of 491 is 491. Since it has a total of 1 prime factors.

Most popular turbo-numbers

Basic calculations (n = 491)

Multiplication

n×y
n×2 982
n×3 1473
n×4 1964
n×5 2455

Division

n÷y
n÷2 245.5
n÷3 163.66666666667
n÷3 122.75
n÷5 98.2

Exponentiation

ny
n2 241081
n3 118370771
n4 58120048561
n5 28536943843451

Nth Root

y√n
2√n 22.15851980616
3√n 7.8890946040238
4√n 4.707283697225
5√n 3.4531567944523

Divisors of 491

1, 491

2 divisors

τ Total Divisors 2
Total number of the positive divisors of n
σ Sum of Divisors 492
Sum of all the positive divisors of n
s Aliquot Sum 1
Sum of the proper positive divisors of n
A Arithmetic Mean 246
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 22.181073012819
Returns the nth root of the product of n divisors
H Harmonic Mean 1.9959349593496
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 491 can be divided by 2 positive divisors. The sum of these divisors (counting 491) is 492, the average is 246.

Base conversion 491

Base System Value
2 Binary 111101011
3 Ternary 200012
4 Quaternary 13223
5 Quinary 3431
6 Senary 2135
8 Octal 753
10 Decimal 491
12 Duodecimal 34b
16 Hexadecimal 1eb
20 Vigesimal 14b
36 Base36 dn

Cryptographic Hash Functions

md5 559cb990c9dffd8675f6bc2186971dc2
sha1 014a1aa3f7a2c6578a3fa48e3dd84f775925489f
sha256 227445a988500528d7826c6921d2e3b4a79ccf3a94cc3bcf7b667e3ae4990b36
sha512 cd0ab9232bf0df83b5ca6e40b1600c66e84fc513736381d6dda23664d1af5ba3626c8a5ea4b06d72bb42c782c5cd9c4049b2364cc6e3de4a9ba9bc2f45d7bbd5
ripemd-160 6e63d211df47b1b909fb46d5415570ee0349dcc9

491 as geometric shapes

Circle

Radius = n
Diameter 982
Circumference 3085.0439858252
Area 757378.29852008

Sphere

Radius = n
Volume 495830326.09781
Surface area 3029513.1940803
Circumference 3085.0439858252

Square

Length = n
Perimeter 1964
Area 241081
Diagonal 694.37885912519

Cube

Length = n
Surface area 1446486
Volume 118370771
Space diagonal 850.43694651632

Equilateral Triangle

Length = n
Perimeter 1473
Area 104391.13518488
Altitude 425.21847325816

Triangular Pyramid

Length = n
Surface area 104391.13518488
Volume 13950129.14473
Height 231.4596197084