Multipling 75000000 by its sum of digits (12), we get a square (900000000 = 300002).
75000000 divided by its sum of digits (12) gives a 4-th power (6250000 = 504).
Adding to 75000000 its reverse (57), we get a palindrome (75000057).
It is a nialpdrome in base 10.
It is a self number, because there is not a number n which added to its sum of digits gives 75000000.
Almost surely, 275000000 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 75000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124023374).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
75000000 is an frugal number, since it uses more digits than its factorization.
75000000 is an evil number, because the sum of its binary digits is even.
The square root of 75000000 is about 8660.2540378444. The cubic root of 75000000 is about 421.7163326509.