161445821 (number)

161445821 is an odd 9-digits composite number following 161445820 and preceding 161445822. In scientific notation, it is written as 1.61445821 × 10^8. The sum of its digits is 32. It has a total of 3 prime factors and 8 positive divisors. There are 150926848 positive integers (up to 161445821) that are relatively prime to 161445821.

Interesting facts

Basic properties

Name

Name one hundred sixty-one million four hundred forty-five thousand eight hundred twenty-one

Notation

Scientific notation 1.61445821 × 10^8
Engineering notation 1.61445821 × 10^6

Prime Factorization of 161445821

Prime Factorization 17 × 149 × 63737

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 161445821
Product of the distinct prime numbers

The prime factorization of 161445821 is 17 × 149 × 63737. Since it has a total of 3 prime factors.

Most popular turbo-numbers

8, 7, 6, 86, 839, 714, 5264, 3058, 13660, 56444, 40782, 481120, 8372567, 6027215, 72127336, 94770267, 590227711, 652789050, 1118541144, 3363901250

Basic calculations (n = 161445821)

Multiplication

n×y
n×2 322891642
n×3 484337463
n×4 645783284
n×5 807229105

Division

n÷y
n÷2 80722910.5
n÷3 53815273.666667
n÷3 40361455.25
n÷5 32289164.2

Exponentiation

ny
n2 26064753118364041
n3 4.2080454663566E+24
n4 6.7937135512127E+32
n5 1.0968166619144E+41

Nth Root

y√n
2√n 12706.133204087
3√n 544.51385652879
4√n 112.72148510416
5√n 43.81323909406

Divisors of 161445821

1, 17, 149, 2533, 63737, 1083529, 9496813, 161445821

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 -161445820
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 161445821 can be divided by 8 positive divisors. The sum of these divisors (counting 161445821) is 1, the average is 0.125.

Base conversion 161445821

Base System Value
2 Binary 1001100111110111011110111101
3 Ternary 102020210022000212
4 Quaternary 21213313132331
5 Quinary 312312231241
6 Senary 24004202205
8 Octal 1147673675
10 Decimal 161445821
12 Duodecimal 46099365
16 Hexadecimal 99f77bd
20 Vigesimal 2a90eb1
36 Base36 2o4ce5

Cryptographic Hash Functions

md5 3827cfcbd22c693f46c501dd23f39313
sha1 6359577694d8523d9ab9490424a884750d03e3e7
sha256 ac0122d16f91a45da0d9fec6b05fe589af92ba7a7bd60e790f494f563e34873c
sha512 ef747bee8715f08746b145c514f363f03abd3d41d71206df48ef32f86daeaf3c5b0f6604799b35c00e822406db93ef619bc3e9cbf20e9640e1625c98c89d6ddb
ripemd-160 035e57783bcc9648407fcd1ea073218dd10d26be

161445821 as geometric shapes

Circle

Radius = n
Diameter 322891642
Circumference 1014394010.4127
Area 8.1884836914284E+16

Sphere

Radius = n
Volume 1.762661963077E+25
Surface area 3.2753934765714E+17
Circumference 1014394010.4127

Square

Length = n
Perimeter 645783284
Area 26064753118364041
Diagonal 228318869.64666

Cube

Length = n
Surface area 156388518710184246
Volume 4.2080454663566E+24
Space diagonal 279632364.64167

Equilateral Triangle

Length = n
Perimeter 484337463
Area 1.1286369171936E+16
Altitude 139816182.32084

Triangular Pyramid

Length = n
Surface area 1.1286369171936E+16
Volume 4.9592291413368E+23
Height 76106289.88222