# A payment or a curse

I'm a payment.
Or a curse.
I'm gold.
Or the second corner.

What am I?

Hints

If you give me something in its prime, I will give you all but one back.

• The hint makes me think of the Euler totient function, though I don't think that fits any of the actual clues. May 18, 2016 at 16:06

$\phi$

I'm a payment.

$\phi$ is pronounced "fee" and a fee is a payment.

Or a curse.

Referring to the archaic word "fie" (sometimes how $\phi$ is pronounced) used to express disapproval.

I'm gold.

$\phi$ is the golden ratio

Or the second corner.

Usually, in geometry, the second Greek letter used to represent an angle, after $\theta$, is $\phi$.

Hint

Euler's totient function $\phi$ applied to a prime number $p$ gives $p-1$

• This has to be right, but I've never heard of your answer being pronounced the way you claim in the second clue. Is it just in the UK (where I'm from) where it is different? May 18, 2016 at 16:19
• @Scoranio As far as I'm aware, Greek people pronounce it "fee" where there is a prevalence among mathematics teachers in some English speaking countries to pronounce it "fy". There might be somebody else here with better knowledge than me though. May 18, 2016 at 16:22
• Here in Canada, I've always heard it pronounced the second way, never the first. May 18, 2016 at 17:01
• You are correct! Good job! May 18, 2016 at 17:29

Is it a

Debt?

I'm a payment.

You repay the debt

Or a curse.

In the bible a debt is a curse.

I'm gold.

A debt can be payed in Gold.

Still have to figure out the last line.

• Nope! Good try though. May 18, 2016 at 14:47

Just a guess but Is it a

Reminder

I'm a payment

Payment reminder

or a curse.

Reminded to pay overdue

I'm gold.

??

or a second corner

??