81571221 (number)

81571221 is an odd 8-digits composite number following 81571220 and preceding 81571222. In scientific notation, it is written as 8.1571221 × 10^7. The sum of its digits is 27. It has a total of 3 prime factors and 8 positive divisors. There are 54286440 positive integers (up to 81571221) that are relatively prime to 81571221.

Interesting facts

Basic properties

Name

Name eighty-one million five hundred seventy-one thousand two hundred twenty-one

Notation

Scientific notation 8.1571221 × 10^7
Engineering notation 8.1571221 × 10^6

Prime Factorization of 81571221

Prime Factorization 9 × 599 × 15131

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 81571221
Product of the distinct prime numbers

The prime factorization of 81571221 is 9 × 599 × 15131. Since it has a total of 3 prime factors.

Most popular turbo-numbers

8, 10, 59, 19, 4, 262, 6689, 9922, 78542, 46562, 239999, 108050, 9112462, 7312166, 63845907, 49139343, 3748366, 820064003, 8321533261, 5079309838

Basic calculations (n = 81571221)

Multiplication

n×y
n×2 163142442
n×3 244713663
n×4 326284884
n×5 407856105

Division

n÷y
n÷2 40785610.5
n÷3 27190407
n÷3 20392805.25
n÷5 16314244.2

Exponentiation

ny
n2 6653864095430841
n3 5.4276381863235E+23
n4 4.4273907400464E+31
n5 3.6114766850968E+39

Nth Root

y√n
2√n 9031.6787476083
3√n 433.68957995924
4√n 95.035144802375
5√n 38.221470579808

Divisors of 81571221

1, 9, 599, 5391, 15131, 136179, 9063469, 81571221

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81571220
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81571221 can be divided by 8 positive divisors. The sum of these divisors (counting 81571221) is 1, the average is 0.125.

Base conversion 81571221

Base System Value
2 Binary 100110111001010110110010101
3 Ternary 12200111020200100
4 Quaternary 10313022312111
5 Quinary 131340234341
6 Senary 12032204313
8 Octal 467126625
10 Decimal 81571221
12 Duodecimal 23399699
16 Hexadecimal 4dcad95
20 Vigesimal 159g811
36 Base36 1ckcr9

Cryptographic Hash Functions

md5 f6c2416dcc905e11950a03c468e17873
sha1 59334d9d42bfea909c0c7d90e5a482055b3b5dc3
sha256 cbed218b197c2a977db82c46ea9df7353f1280a1ad9dc3bb80b3a6211fcf6dc6
sha512 6b5dbfd197ad612bc8ee829271b70a269b179b007981b990d977a26e5010549a289e8522d7d5a9da217a086d45b60866cf39cec90fcfd3a41e1239be395131ef
ripemd-160 0fc6723c40807715af7f9e1b5aa71d410d0bc5f6

81571221 as geometric shapes

Circle

Radius = n
Diameter 163142442
Circumference 512527097.2759
Area 2.090373056019E+16

Sphere

Radius = n
Volume 2.2735237669997E+24
Surface area 8.3614922240762E+16
Circumference 512527097.2759

Square

Length = n
Perimeter 326284884
Area 6653864095430841
Diagonal 115359127.03753

Cube

Length = n
Surface area 39923184572585046
Volume 5.4276381863235E+23
Space diagonal 141285499.20743

Equilateral Triangle

Length = n
Perimeter 244713663
Area 2.8812076699861E+15
Altitude 70642749.603715

Triangular Pyramid

Length = n
Surface area 2.8812076699861E+15
Volume 6.3965329456274E+22
Height 38453042.345844