Tumblr does not enable you to view who else's followers are. However, by looking at the Tumblr user's post answers and who that person follows, you may tell some of the individuals who are reading and engaging with another Tumblr user.
Your list of followers, which is available on both the desktop site and the Tumblr mobile app, is the first place you go to see who is following you. The directory also shows the countries that your followers are from.
Click the "Followers" button to discover links to your blog's followers' Tumblr profiles. Any of them can be followed back by clicking the blue "Follow" icon to the right of their names. Note that not all users will have their profiles public; if you click a username without seeing a profile image, they probably aren't following you back.
You may find someone on Tumblr by searching for the person's email address. Enter an email address on Tumblr's following page to see any blogs related with that address. The page lists any Tumblr blogs that match that address.
Any account whose primary blog has been canceled can continue follow you, raising your follower count. Tumblr, on the other hand, displays accounts by their primary blog, and Tumblr conceals terminated sites, so you won't see them in your following list. Even if you did, you would be unable to access the blog. The only way to find out if someone is following you is to go to their blog and check.
If your Tumblr account is linked to your email, you should receive an email whenever you earn a new follower. Enter your your address and look for new follower alerts (results may vary based on how much activity you do on Tumblr). Access your Tumblr account in a separate window or tab. Click the Follow button next to your favorite blogs.
Tumblr allows you to display favorited posts from other Tumblr blogs on your own website so that your followers can see what you've discovered and like. However, these liked posts are visible only to you - they cannot be seen by anyone else.