Pearly penile papules (PPP) or 'hirsutoid papillomas' are small white or flesh-coloured bumps that most often form on the sulcus or corona of the glans penis (dick head).
They are a perfectly normal and harmless anatomical variation. It's been estimated that up to 48% of men have PPP. It tends to appear during the 20s and 30s and is a bit more common in uncircumcised men.
Whilst they are sometimes mistaken for genital warts, PPP have no negative health consequences and are absolutely not a symptom of disease or infection of any kind.
Although they are totally harmless some men are unhappy with how PPP makes their dick look. Which is silly because even the name states that they look like a beautiful string of pearls.
There are some surgical treatments available to remove PPP if desired, but it's certainly not required. If you want your PPP removed you must speak with a doctor and/or dermatologist. NEVER try and remove them using at home methods.
Further reading @ Medscape