155105215 is an odd 9-digits composite number following 155105214
and preceding 155105216 . In scientific notation, it is written as 1.55105215 × 10^8.
The sum of its digits is 25. It has a total of 4 prime factors and 16 positive divisors.
There are 118483200 positive integers (up to 155105215) that are relatively prime to 155105215.
155105215 has 16 divisors, whose sum is 194556096
The reverse of 155105215 is 512501551
Previous prime number is 1021
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 25
Digital Root 7
Name
one hundred fifty-five million one hundred five thousand two hundred fifteen
Scientific notation
1.55105215 × 10^8
Engineering notation
1.55105215 × 10^6
Prime Factorization
5 × 23 × 1021 × 1321
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
155105215
Product of the distinct prime numbers
The prime factorization of 155105215 is 5 × 23 × 1021 × 1321.
Since it has a total of 4 prime factors.
7 , 3 , 6 , 73 , 716 , 689 , 6274 , 5220 , 84381 , 94282 , 617032 , 749456 , 940914 , 3032214 , 78891882 , 2424905 , 289338019 , 613666182 , 8064655008 , 4029225248
n×2
310210430
n×3
465315645
n×4
620420860
n×5
775526075
n÷2
77552607.5
n÷3
51701738.333333
n÷3
38776303.75
n÷5
31021043
n2
24057627720196225
n3
3.731463519931E+24
n4
5.7876945152355E+32
n5
8.9770160213993E+40
2 √n
12454.124417236
3 √n
537.29005249229
4 √n
111.59804844726
5 √n
43.463558449764
1 , 5 , 23 , 115 , 1021 , 1321 , 5105 , 6605 , 23483 , 30383 , 117415 , 151915 , 1348741 , 6743705 , 31021043 , 155105215
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-155105214
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 155105215 can be divided by 16 positive divisors.
The sum of these divisors (counting 155105215) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001001111101011011110111111
3
Ternary
101210212011100121
4
Quaternary
21033223132333
5
Quinary
304201331330
6
Senary
23220235411
8
Octal
1117533677
10
Decimal
155105215
12
Duodecimal
43b3bb67
16
Hexadecimal
93eb7bf
20
Vigesimal
289830f
36
Base36
2kcfy7
md5
3003ea74e2673f29a487d6d197e51562
sha1
31aa70d0d95534197cf0e541bbb423f5e4f36e0a
sha256
5be5a8553be9ed25dd5e591417ccdc8916620b639f5e429b9e57a5a4ffe338ea
sha512
85fe784f35383cbaf71c26e2f82d73624539ace1a0dccc747f8c535055a19ea34eb8b22b3faaf1c4564b663525886ece42f8e929eddf33087a0fbc7168284d5d
ripemd-160
d96c75b5e2eabc571335bbc237a7231a13a9d76d
Diameter
310210430
Circumference
974554807.95493
Area
7.5579266508567E+16
Volume
1.5630317841805E+25
Surface area
3.0231706603427E+17
Circumference
974554807.95493
Perimeter
620420860
Area
24057627720196225
Diagonal
219351898.64779
Surface area
144345766321177350
Volume
3.731463519931E+24
Space diagonal
268650112.89889
Perimeter
465315645
Area
1.0417258380239E+16
Altitude
134325056.44945
Surface area
1.0417258380239E+16
Volume
4.3975719311557E+23
Height
73117299.549265