81506775 (number)

81506775 is an odd 8-digits composite number following 81506774 and preceding 81506776. In scientific notation, it is written as 8.1506775 × 10^7. The sum of its digits is 39. It has a total of 4 prime factors and 12 positive divisors. There are 37260000 positive integers (up to 81506775) that are relatively prime to 81506775.

Interesting facts

Basic properties

Name

Name eighty-one million five hundred six thousand seven hundred seventy-five

Notation

Scientific notation 8.1506775 × 10^7
Engineering notation 8.1506775 × 10^6

Prime Factorization of 81506775

Prime Factorization 21 × 5 × 5 × 155251

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 16301355
Product of the distinct prime numbers

The prime factorization of 81506775 is 21 × 5 × 5 × 155251. Since it has a total of 4 prime factors.

Most popular turbo-numbers

6, 5, 55, 29, 961, 418, 1110, 4053, 61674, 19649, 567921, 824734, 4258139, 7826673, 83927586, 34470917, 155640965, 521824419, 5986149473, 9984583638

Basic calculations (n = 81506775)

Multiplication

n×y
n×2 163013550
n×3 244520325
n×4 326027100
n×5 407533875

Division

n÷y
n÷2 40753387.5
n÷3 27168925
n÷3 20376693.75
n÷5 16301355

Exponentiation

ny
n2 6643354370900625
n3 5.4147838995426E+23
n4 4.4134157297364E+31
n5 3.5972328286509E+39

Nth Root

y√n
2√n 9028.1102673815
3√n 433.57533655268
4√n 95.016368418192
5√n 38.215429234179

Divisors of 81506775

1, 5, 21, 25, 105, 525, 155251, 776255, 3260271, 3881275, 16301355, 81506775

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81506774
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81506775 can be divided by 12 positive divisors. The sum of these divisors (counting 81506775) is 1, the average is 0.083333333333333.

Base conversion 81506775

Base System Value
2 Binary 100110110111011000111010111
3 Ternary 12200100222021110
4 Quaternary 10312323013113
5 Quinary 131331204100
6 Senary 12030550103
8 Octal 466730727
10 Decimal 81506775
12 Duodecimal 23368333
16 Hexadecimal 4dbb1d7
20 Vigesimal 15986if
36 Base36 1ciz13

Cryptographic Hash Functions

md5 4cda9a5a1fa4db8407a49f5aedabcf62
sha1 ee7dfc82a88725adbda0bbbab1017a57b9980696
sha256 7091e9017919a0c430fdf5816fb20f4e93d5f6e2adba959ae663ed92e177b0f7
sha512 850919f71aa8c22e3888f356033a16b155f5ef5f0df8b3fdc379aa54252a516821d4bf5f337e710d59ad78f98dd382e927a406623553b72f85c77235821ddc43
ripemd-160 df3f2c8873c483b02ae1bc3456c656fe5a7db687

81506775 as geometric shapes

Circle

Radius = n
Diameter 163013550
Circumference 512122171.11559
Area 2.0870713286815E+16

Sphere

Radius = n
Volume 2.2681393759439E+24
Surface area 8.348285314726E+16
Circumference 512122171.11559

Square

Length = n
Perimeter 326027100
Area 6643354370900625
Diagonal 115267986.63029

Cube

Length = n
Surface area 39860126225403750
Volume 5.4147838995426E+23
Space diagonal 141173875.46108

Equilateral Triangle

Length = n
Perimeter 244520325
Area 2.8766568257712E+15
Altitude 70586937.730542

Triangular Pyramid

Length = n
Surface area 2.8766568257712E+15
Volume 6.3813840233772E+22
Height 38422662.210097