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

81121657 (number)

81121657 is an odd 8-digits composite number following 81121656 and preceding 81121658. In scientific notation, it is written as 8.1121657 × 10^7. The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors. There are 77959200 positive integers (up to 81121657) that are relatively prime to 81121657.

Interesting facts

81121657 has 8 divisors, whose sum is 84343392
The reverse of 81121657 is 75612118
Previous prime number is 67

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4

Name

Name	eighty-one million one hundred twenty-one thousand six hundred fifty-seven

Notation

Scientific notation	8.1121657 × 10^7
Engineering notation	8.1121657 × 10^6

Prime Factorization of 81121657

Prime Factorization 41 × 67 × 29531

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81121657	Product of the distinct prime numbers

The prime factorization of 81121657 is 41 × 67 × 29531. Since it has a total of 3 prime factors.

Most popular turbo-numbers

6, 1, 18, 97, 991, 549, 6885, 217, 14857, 22910, 416474, 436318, 7445066, 1538541, 37573016, 31652638, 312605330, 292844247, 7445181468, 1633392215

Basic calculations (n = 81121657)

Multiplication

n×y

n×2	162243314
n×3	243364971
n×4	324486628
n×5	405608285

Division

n÷y

n÷2	40560828.5
n÷3	27040552.333333
n÷3	20280414.25
n÷5	16224331.4

Exponentiation

n^y

n²	6580723234425649
n³	5.3383917303501E+23
n⁴	4.330591828811E+31
n⁵	3.5130478494381E+39

Nth Root

^y√n

²√n	9006.7561863303
³√n	432.89137971686
⁴√n	94.903931353397
⁵√n	38.179247347051

Divisors of 81121657

1, 41, 67, 2747, 29531, 1210771, 1978577, 81121657

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	-81121656	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 81121657 can be divided by 8 positive divisors. The sum of these divisors (counting 81121657) is 1, the average is 0.125.

Base conversion 81121657

Base	System	Value
2	Binary	100110101011101000101111001
3	Ternary	12122122101222211
4	Quaternary	10311131011321
5	Quinary	131231343112
6	Senary	12014415121
8	Octal	465350571
10	Decimal	81121657
12	Duodecimal	232014a1
16	Hexadecimal	4d5d179
20	Vigesimal	157042h
36	Base36	1capvd

Cryptographic Hash Functions

md5	d8fe9ec57b4032fc2135b97e96b835e0
sha1	762ae64316ddbf20572f0ec6b5925705a5f375f2
sha256	4c5e482969085cdc522c4c3d21ac0a91b0477abdc6b77bf470f25c28b7a6370e
sha512	0181abc044b342a119cd8f0c1c10185e304e0766a6f132ff968d5d6dfdaa216eec734c5fd5bf83baeb67e32ba6df9b824faadd01b0bf7581892142d7a27663dd
ripemd-160	fb03ca7d80b4a682f7661f2f385fb6f1aed38e3e

81121657 as geometric shapes

Circle

Radius = n

Diameter	162243314
Circumference	509702403.35646
Area	2.0673951768579E+16

Sphere

Radius = n

Volume	2.2361402989403E+24
Surface area	8.2695807074317E+16
Circumference	509702403.35646

Square

Length = n

Perimeter	324486628
Area	6580723234425649
Diagonal	114723347.53158

Cube

Length = n

Surface area	39484339406553894
Volume	5.3383917303501E+23
Space diagonal	140506831.51818

Equilateral Triangle

Length = n

Perimeter	243364971
Area	2.8495367481436E+15
Altitude	70253415.759088

Triangular Pyramid

Length = n

Surface area	2.8495367481436E+15
Volume	6.2913549886012E+22
Height	38241115.843859