The Number 55: Properties and Meanings
Prime Factors of
55=
5x
11.
55 can be
Partitioned 28 times with each term no larger than
2.
55 can be
Partitioned 280 times with each term no larger than
3.
55 can be
Partitioned 1495 times with each term no larger than
4.
55 is a
Fibonacci Number.
55 is a
Triangular Number.
55 is a
Heptagonal Number.
55 is a
Centered Nonagonal Number.
55 is a
Centered 18-gonal Number.
55 is a
Square Pyramidal Number.
55 is the largest
Triangular Number in the
Fibonacci Sequence.
the sum of
5 successive
Triangular Number (
3+
6+
10+
15+
21 =
55)
Sum of the two series of following numbers:
1,
2,
4,
8 and
1,
3,
9,
27=
55.
Sum of the first
5 Square Numbers =
1 +
4 +
9 +
16 +
25 =
55
Sum of the
8 factors of
36 =
1 +
2 +
3 +
4 +
6 +
9 +
12 +
18 =
55
Caesium is a soft, silver-white, metallic element with atomic number
55. It is a very reactive element, exploding on contact with water and reacting instantly with air.
The
Chemical Element Manganese has one
Stable Isotope. It has
55 neutrons.
"The Ancient Chinese believed that "the sum total of heavenly numbers and earthly numbers is
55. It is this...which sets the gods and demons in movement."
The Year 55 AD
In the year
55 AD King Nicander II of Hellas died. He was succeeded by Pausanias III.
In the year
55 AD King Vologeses of Parthia was killed in battle against the Kushans. He was succeeded by his son, who reigns as King Mithridates III.