Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

81018055 (number)

81018055 is an odd 8-digits composite number following 81018054 and preceding 81018056. In scientific notation, it is written as 8.1018055 × 10^7. The sum of its digits is 28. It has a total of 4 prime factors and 16 positive divisors. There are 63711648 positive integers (up to 81018055) that are relatively prime to 81018055.

Interesting facts

81018055 has 16 divisors, whose sum is 98887680
The reverse of 81018055 is 55081018
Previous prime number is 79

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1

Name

Name	eighty-one million eighteen thousand fifty-five

Notation

Scientific notation	8.1018055 × 10^7
Engineering notation	8.1018055 × 10^6

Prime Factorization of 81018055

Prime Factorization 5 × 443 × 79 × 463

Composite number

ω	Distinct Factors	4	Total number of distinct prime factors
Ω	Total Factors	4	Total number of prime factors
rad	Radical	81018055	Product of the distinct prime numbers

The prime factorization of 81018055 is 5 × 443 × 79 × 463. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 7, 76, 100, 912, 879, 2352, 656, 21539, 54474, 293756, 206580, 5581966, 5569986, 10184326, 27382097, 686287689, 692700242, 7360959895, 7477313197

Basic calculations (n = 81018055)

Multiplication

n×y

n×2	162036110
n×3	243054165
n×4	324072220
n×5	405090275

Division

n÷y

n÷2	40509027.5
n÷3	27006018.333333
n÷3	20254513.75
n÷5	16203611

Exponentiation

n^y

n²	6563925235983025
n³	5.3179645578476E+23
n⁴	4.3085114503575E+31
n⁵	3.4906721765319E+39

Nth Root

^y√n

²√n	9001.0029996662
³√n	432.70701662489
⁴√n	94.873615930174
⁵√n	38.169490473955

Divisors of 81018055

1, 5, 79, 395, 443, 463, 2215, 2315, 34997, 36577, 174985, 182885, 205109, 1025545, 16203611, 81018055

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	-81018054	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 81018055 can be divided by 16 positive divisors. The sum of these divisors (counting 81018055) is 1, the average is 0.0625.

Base conversion 81018055

Base	System	Value
2	Binary	100110101000011110011000111
3	Ternary	12122110010212201
4	Quaternary	10311003303013
5	Quinary	131220034210
6	Senary	12012255331
8	Octal	465036307
10	Decimal	81018055
12	Duodecimal	23171547
16	Hexadecimal	4d43cc7
20	Vigesimal	156752f
36	Base36	1c8hxj

Cryptographic Hash Functions

md5	340887bf5eb3b4ae0f4cad26138ee7ad
sha1	f18d2f23897a66c40381f9074e73b6cf1a4dabd0
sha256	77bcecf2b0328c9391cde9eac604d9d6887d7bbb68424d931e90c70872475d69
sha512	b0177bd04d77d37ba62c8a5f28f17276b4afa0df97f181c947470728a44ff3877919c4f515a7410d1f17381b0c312fe20aae87365e71074fd871ed97fb9a3ec4
ripemd-160	081b921566eaaa6b252f2d763ed20bd87cb22409

81018055 as geometric shapes

Circle

Radius = n

Diameter	162036110
Circumference	509051452.79227
Area	2.0621179300077E+16

Sphere

Radius = n

Volume	2.2275837849313E+24
Surface area	8.2484717200308E+16
Circumference	509051452.79227

Square

Length = n

Perimeter	324072220
Area	6563925235983025
Diagonal	114576832.17809

Cube

Length = n

Surface area	39383551415898150
Volume	5.3179645578476E+23
Space diagonal	140327387.59041

Equilateral Triangle

Length = n

Perimeter	243054165
Area	2.8422630014515E+15
Altitude	70163693.795205

Triangular Pyramid

Length = n

Surface area	2.8422630014515E+15
Volume	6.2672813349396E+22
Height	38192277.392696