49 characters. 
sub r{
local$_=$@=pop;y/2569/5296/;$@!~/[347]/&&$@==reverse
}

[download]

Update: 46 characters: 

sub r{
y/2569/5296/for$@=pop;$@!~/[347]/&&$@==reverse
}

[download]

Update: 43 characters: 

sub r{
y/2569/5296/for$@=pop;!/[347]/&&$@==reverse
}

# A slightly different take ...
sub r2{
y/2569/5296/for$@=pop;!(/[347]/|$@-reverse)
}

[download]

Update: 42 characters ... I'm not so certain about this one, but it passes my tests. *shrugs* It looks like it should work because I'm bit-anding SV_yes and SV_no values, which should DWIM in that context. 

sub r{
y/2569/5296/for$@=pop;!/[347]/&$@==reverse
}

sub r{
y/2569/5296/for$@=pop;!y/347//&$@==reverse
}

[download]

------
We are the carpenters and bricklayers of the Information Age.

Then there are Damian modules.... *sigh* ... that's not about being less-lazy -- that's about being on some really good drugs -- you know, there is no spoon. - flyingmoose

I shouldn't have to say this, but any code, unless otherwise stated, is untested

In reply to Re: (Challenge) Rotateable numbers by dragonchild
in thread (Challenge) Rotateable numbers by FoxtrotUniform

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