21509903 is an odd 8-digits prime number following 21509902
and preceding 21509904 . In scientific notation, it is written as 2.1509903 × 10^7.
The sum of its digits is 29. It has a total of 1 prime factors and 2 positive divisors.
There are 21509902 positive integers (up to 21509903) that are relatively prime to 21509903.
21509903 has 2 divisors, whose sum is 21509904
The reverse of 21509903 is 30990512
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2
Name
twenty-one million five hundred nine thousand nine hundred three
Scientific notation
2.1509903 × 10^7
Engineering notation
2.1509903 × 10^6
Prime Factorization
21509903
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
21509903
Product of the distinct prime numbers
The prime factorization of 21509903 is 21509903.
Since it has a total of 1 prime factors.
10 , 3 , 87 , 62 , 810 , 780 , 8553 , 6205 , 53915 , 5498 , 777601 , 914269 , 4400719 , 874762 , 6008110 , 65994384 , 70637140 , 564510712 , 2270925477 , 25073888
n×2
43019806
n×3
64529709
n×4
86039612
n×5
107549515
n÷2
10754951.5
n÷3
7169967.6666667
n÷3
5377475.75
n÷5
4301980.6
n2
462675927069409
n3
9.9521143116981E+21
n4
2.1406901348954E+29
n5
4.6046037154656E+36
2 √n
4637.876992763
3 √n
278.10757443322
4 √n
68.101960271074
5 √n
29.277075344844
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
21509904
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
10754952
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
4637.8771005709
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999070196
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21509903 can be divided by 2 positive divisors.
The sum of these divisors (counting 21509903) is 21509904, the average is 10754952.
Base
System
Value
2
Binary
1010010000011011100001111
3
Ternary
1111110211001002
4
Quaternary
1102003130033
5
Quinary
21001304103
6
Senary
2045010515
8
Octal
122033417
10
Decimal
21509903
12
Duodecimal
7253a3b
16
Hexadecimal
148370f
20
Vigesimal
6e8ef3
36
Base36
ct15b
md5
1c88874d76513613e169f8533d90d43d
sha1
5e3b93732d1e91fd2bfe170128fb7e1fbfc1b636
sha256
d6ce952d78272bceef886543aba9ddce10730033b9b4ff2d44e316935771ac85
sha512
a87f0e127f505907ca6f881ea6237dcdb1df95ae46f7c283229675e945bab7f8edb4cab909c9f93b914ee34884d24906e5b21e5d95104b323e390612c710b3be
ripemd-160
bd62f8882502dd99bb15095d6e4a18baa5a62449
Diameter
43019806
Circumference
135150706.48846
Area
1.4535392934741E+15
Volume
4.1687318945755E+22
Surface area
5.8141571738964E+15
Circumference
135150706.48846
Perimeter
86039612
Area
462675927069409
Diagonal
30419596.54793
Surface area
2776055562416454
Volume
9.9521143116981E+21
Space diagonal
37256244.861878
Perimeter
64529709
Area
2.0034455328081E+14
Altitude
18628122.430939
Surface area
2.0034455328081E+14
Volume
1.1728679194909E+21
Height
10139865.515977