55

Previous number

54

Next number

56

Sum of digits

10

Divisors of 55

Number of divisors

4

Sum of divisors

72

Factorization

55 = 5 × 11

Prime factors of 55

Factor Count
5 1
11 1

Square of 55

3025

Cube of 55

166375

Square root of 55

7.41619848709566298339268541894853...

Cube root of 55

3.80295246076139115132264123531058...

55th triangle number

1540

Reciprocal of 55

0.0181818181818182

Binary of 55

110111

Number of digits of 55 in base 2

6

Octal of 55

67

Hexadecimal of 55

37

Prime number No
Hexagonal number No
Perfect number No
Deficient number No
Abundant number No
Mersenne number No
Harshad number No
Harmonic divisor number No

Quadratic residues of 55

QR55 (sequence)

55th composite number

77

Euler's totient function of 55

40

Carmichael function of 55

20

Möbius function of 55

1

Properties of 55

Properties of the number 55: 55 has 4 divisors. The divisors of 55 are 1, 5, 11, 55 and the sum of them is 72. The factorization of 55 is 5 × 11. The square and cube of 55 are 3025 and 166375 respectively. The square root and cube root of 55 are 7.41619848709566298339268541894853... and 3.80295246076139115132264123531058.... The binary, octal, hexadecimal of 55 are 110111, 67, 37. 55 is not a prime number, not hexagonal number, not perfect number, not deficient number, not Mersenne number, not Mersenne number, not Harshad number, not harmonic divisor number.

sin 55

-0.99975517335861985301903587242123...

cos 55

0.02212675626195573577725816960537...

tan 55

-45.18308791052113093655862030573189...

sin 55°

0.81915204428899179855960710483487...

cos 55°

0.57357643635104615942310601894860...

tan 55°

1.42814800674211439535099543718388...

log 55

4.00733318523247117326491206767969...

log10 55

1.74036268949424388630120574816829...

log2 55

5.78135971352465993788882769877091...

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