81121543 is an odd 8-digits prime number following 81121542
and preceding 81121544 . In scientific notation, it is written as 8.1121543 × 10^7.
The sum of its digits is 25. It has a total of 1 prime factors and 2 positive divisors.
There are 81121542 positive integers (up to 81121543) that are relatively prime to 81121543.
81121543 has 2 divisors, whose sum is 81121544
The reverse of 81121543 is 34512118
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 25 Digital Root 7
Name
eighty-one million one hundred twenty-one thousand five hundred forty-three
Scientific notation
8.1121543 × 10^7
Engineering notation
8.1121543 × 10^6
Prime Factorization
81121543
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
81121543 Product of the distinct prime numbers
The prime factorization of 81121543 is 81121543.
Since it has a total of 1 prime factors.
8 , 5 , 35 , 33 , 631 , 706 , 7853 , 4457 , 75695 , 50761 , 589377 , 532825 , 4652935 , 4300192 , 88864543 , 20602375 , 344762982 , 900548819 , 108350987 , 8409585208
n×2
162243086
n×3
243364629
n×4
324486172
n×5
405607715
n÷2
40560771.5
n÷3
27040514.333333
n÷3
20280385.75
n÷5
16224308.6
n2
6580704738700849
n3
5.3383692243082E+23
n4
4.330567485796E+31
n5
3.513023165134E+39
2 √n9006.7498577456
3 √n432.89117693649
4 √n94.903898011333
5 √n38.179236616411
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
81121544 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
40560772 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
9006.7499132595 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999753456 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81121543 can be divided by 2 positive divisors.
The sum of these divisors (counting 81121543) is 81121544, the average is 40560772.
Base
System
Value
2
Binary
100110101011101000100000111
3
Ternary
12122122101211121
4
Quaternary
10311131010013
5
Quinary
131231342133
6
Senary
12014414411
8
Octal
465350407
10
Decimal
81121543
12
Duodecimal
23201407
16
Hexadecimal
4d5d107
20
Vigesimal
15703h3
36
Base36
1caps7
md5
1720d9d969766354174475cdcc68a160
sha1
cead167d05b4edf93440bd7cd84efcc34a4cad92
sha256
797649c7461f0a10cf30af89f4038f3d01de059c19c0e1f5a9e8e03be7f0a9b2
sha512
7656df2a97c16340bcd1f58c8f27bb563add498e93cb4bdf5149cddf96caaa3ad6aca8a15ae39d7ee4b7fb74b44ab81d24b5de157731e92be105dc4676945914
ripemd-160
eb2968f3591b9f6d387b86f21fda87a84a6a43d1
Diameter
162243086
Circumference
509701687.07334
Area
2.0673893662546E+16
Volume
2.2361308716316E+24
Surface area
8.2695574650185E+16
Circumference
509701687.07334
Perimeter
324486172
Area
6580704738700849
Diagonal
114723186.31123
Surface area
39484228432205094
Volume
5.3383692243082E+23
Space diagonal
140506634.06438
Perimeter
243364629
Area
2.8495287392598E+15
Altitude
70253317.032192
Surface area
2.8495287392598E+15
Volume
6.2913284649766E+22
Height
38241062.103744