161005987 (number)

161005987 is an odd 9-digits prime number following 161005986 and preceding 161005988. In scientific notation, it is written as 1.61005987 × 10^8. The sum of its digits is 37. It has a total of 1 prime factors and 2 positive divisors. There are 161005986 positive integers (up to 161005987) that are relatively prime to 161005987.

Interesting facts

Basic properties

Name

Name one hundred sixty-one million five thousand nine hundred eighty-seven

Notation

Scientific notation 1.61005987 × 10^8
Engineering notation 1.61005987 × 10^6

Prime Factorization of 161005987

Prime Factorization 161005987

Composite number
ω Distinct Factors 1
Total number of distinct prime factors
Ω Total Factors 1
Total number of prime factors
rad Radical 161005987
Product of the distinct prime numbers

The prime factorization of 161005987 is 161005987. Since it has a total of 1 prime factors.

Most popular turbo-numbers

3, 3, 99, 25, 736, 441, 8928, 6933, 41430, 82432, 294933, 832413, 2393099, 7298656, 61746672, 74349222, 896826290, 18501978, 9708028289, 6832445727

Basic calculations (n = 161005987)

Multiplication

n×y
n×2 322011974
n×3 483017961
n×4 644023948
n×5 805029935

Division

n÷y
n÷2 80502993.5
n÷3 53668662.333333
n÷3 40251496.75
n÷5 32201197.4

Exponentiation

ny
n2 25922927849844169
n3 4.1737465843939E+24
n4 6.7199818830823E+32
n5 1.0819573157078E+41

Nth Root

y√n
2√n 12688.813459106
3√n 544.01892573106
4√n 112.64463351224
5√n 43.789340567206

Divisors of 161005987

1, 161005987

2 divisors

τ Total Divisors 2
Total number of the positive divisors of n
σ Sum of Divisors 161005988
Sum of all the positive divisors of n
s Aliquot Sum 1
Sum of the proper positive divisors of n
A Arithmetic Mean 80502994
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 12688.813498511
Returns the nth root of the product of n divisors
H Harmonic Mean 1.9999999875781
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 161005987 can be divided by 2 positive divisors. The sum of these divisors (counting 161005987) is 161005988, the average is 80502994.

Base conversion 161005987

Base System Value
2 Binary 1001100110001100000110100011
3 Ternary 102012221221200201
4 Quaternary 21212030012203
5 Quinary 312204142422
6 Senary 23550530031
8 Octal 1146140643
10 Decimal 161005987
12 Duodecimal 45b06917
16 Hexadecimal 998c1a3
20 Vigesimal 2a65ej7
36 Base36 2nux0j

Cryptographic Hash Functions

md5 0c5b54f7eddb74b0d3d59661d1dc239d
sha1 d38d8f001cb2a3a94e61c5eb29d3a3cd99353294
sha256 697e113d4a68eb14e6b252cab23e72d76ce1d19e903e45627b518699f58f87ea
sha512 af3f1624241a3bca46c98486b6a1e5b8eb647f383064780de3dda0eb82d9c1515c31bfeeb020d236310f6dde32d2f39ac7af6c0b420fd6d691e774ab4b29664d
ripemd-160 61bfc3815db54ad60b26fa98d9f177f01df826d7

161005987 as geometric shapes

Circle

Radius = n
Diameter 322011974
Circumference 1011630451.8863
Area 8.1439279692609E+16

Sphere

Radius = n
Volume 1.748294880997E+25
Surface area 3.2575711877043E+17
Circumference 1011630451.8863

Square

Length = n
Perimeter 644023948
Area 25922927849844169
Diagonal 227696850.43867

Cube

Length = n
Surface area 155537567099065014
Volume 4.1737465843939E+24
Space diagonal 278870549.80677

Equilateral Triangle

Length = n
Perimeter 483017961
Area 1.1224957029218E+16
Altitude 139435274.90339

Triangular Pyramid

Length = n
Surface area 1.1224957029218E+16
Volume 4.9188075212986E+23
Height 75898950.146222