1 can pronounce as 一(yi1), but sometimes can be also pronounce as 幺(yao1). The latter sounds similar to another character 要(yao4, meaning command to do something), and together represents as 要去死(something like you are going to die).

As to 54, maybe you are referring to 勿死(wu4 si3)? Its meaning is closer to, please don't die, than not dying, and though I am not sure, but 勿 uses to negating another word seems kinda ancient and outdated.