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

81261 (number)

81261 is an odd 5-digits composite number following 81260 and preceding 81262. In scientific notation, it is written as 8.1261 × 10^4. The sum of its digits is 18. It has a total of 2 prime factors and 4 positive divisors. There are 54168 positive integers (up to 81261) that are relatively prime to 81261.

Interesting facts

81261 has 4 divisors, whose sum is 90300
The reverse of 81261 is 16218
Previous prime number is 9

Basic properties

Is Prime? no
Number parity odd
Number length 5
Sum of Digits 18
Digital Root 9

Name

Name	eighty-one thousand two hundred sixty-one

Notation

Scientific notation	8.1261 × 10^4
Engineering notation	8.1261 × 10^3

Prime Factorization of 81261

Prime Factorization 9 × 9029

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81261	Product of the distinct prime numbers

The prime factorization of 81261 is 9 × 9029. Since it has a total of 2 prime factors.

Most popular turbo-numbers

6, 5, 49, 90, 515, 865, 4086, 1121, 77665, 15993, 417742, 24605, 4414328, 6389117, 14291633, 95505937, 478138960, 684836434, 3485175812, 5300557405

Basic calculations (n = 81261)

Multiplication

n×y

n×2	162522
n×3	243783
n×4	325044
n×5	406305

Division

n÷y

n÷2	40630.5
n÷3	27087
n÷3	20315.25
n÷5	16252.2

Exponentiation

n^y

n²	6603350121
n³	536594834182581
n⁴	4.3604232820511E+19
n⁵	3.5433235632275E+24

Nth Root

^y√n

²√n	285.06315089818
³√n	43.313909769646
⁴√n	16.883813280719
⁵√n	9.5934856991023

Divisors of 81261

1, 9, 9029, 81261

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81260	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	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	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81261 can be divided by 4 positive divisors. The sum of these divisors (counting 81261) is 1, the average is 0.25.

Base conversion 81261

Base	System	Value
2	Binary	10011110101101101
3	Ternary	11010110200
4	Quaternary	103311231
5	Quinary	10100021
6	Senary	1424113
8	Octal	236555
10	Decimal	81261
12	Duodecimal	3b039
16	Hexadecimal	13d6d
20	Vigesimal	a331
36	Base36	1qp9

Cryptographic Hash Functions

md5	d02a0044e3b4875aaf2c03664de4f655
sha1	dfb5739c1e01efd30b847f0d17a05e598be526cd
sha256	d304c42e1c444e6ca044384a56fbc5b804b1714d23ec49b553d16fd69344845f
sha512	9de79b265015b3e34dbcddeca8f60f6e67e72417274451550cb793d8a885b697190b6fba038f74c119e090ebd09f088da18f044028d531fdc5b8ec0119e2419b
ripemd-160	b8d1f2983a3d6385df04bdacccc205d7bd980fdc

81261 as geometric shapes

Circle

Radius = n

Diameter	162522
Circumference	510577.92124672
Area	20745036229.215

Sphere

Radius = n

Volume	2.247683185363E+15
Surface area	82980144916.859
Circumference	510577.92124672

Square

Length = n

Perimeter	325044
Area	6603350121
Diagonal	114920.408292

Cube

Length = n

Surface area	39620100726
Volume	536594834182581
Space diagonal	140748.18067385

Equilateral Triangle

Length = n

Perimeter	243783
Area	2859334477.4345
Altitude	70374.090336927

Triangular Pyramid

Length = n

Surface area	2859334477.4345
Volume	63238307666696
Height	38306.802764