49 (forty-nine) is the natural number following 48 and preceding 50.
The aliquot sum of forty-nine is 8. and this number has an aliquot sequence of (8, 7, 1, 0).
49 is the 8th composite number in the 7-aliquot tree.
The sum of the digits of the square of 49 (2401) is the square root of 49.
49 is the first square where the digits are squares. In this case 4 and 9 are squares.
It appears in the Padovan sequence, preceded by the terms 21, 28, 37 (it is the sum of the first two of these).
Along with the number that immediately derives from it, 77, the only number under 3 digits not having its home prime known (as of late 2010).
The fraction 1⁄49 is a repeating decimal with a period of 42:
There are 42 (note that this number is the period) positive integers that are less than 49 and coprime to 49. Multiplying 020408163265306122448979591836734693877551 by each of these integers results in a cyclic permutation of the original number:
Up close to the edge
I wanna fall all the way down
Up close to the edge
Open my eyes
Walk straight ahead
I wanna fall
All the way down
I'm gonna run
When I hit the ground
Do you feel for me what I feel for you
Now you're turning on this electricity
Running through my veins, pulse begins to race
Come and satisy my curiosity
Keep imagining what it would be like
Got the power to make this reality
You're so close to me, almost taste your lips
Flying high, can't you feel it's intensity
Only one way to go when you're on the outside looking in
Tell me what I need know
Don't recognise my own reflection when I'm in this state of mind
Up close to the edge
Open my eyes
Walk straight ahead
I wanna fall
All the way down
I'm gonna run
When I hit the ground
You're taking me close to the edge
Open my eyes walk straight ahead
I wanna fall all the way down
I'm gonna run when I hit the ground
I'm close to the edge....
I wanna fall all the way down....
I'im close to the edge.....
I wanna fall all the way down....
Are you reading me like im reading you
Are we transmitting on a new frequency
Hear it loud and clear
Message understood
Chain reaction coz we've got a chemistry
Now I'm standing here with my world below
Body's shaking is this how it's meant to be?
But I'm not afraid coz I'm not alone