Multipling 551075625 by its sum of digits (36), we get a square (19838722500 = 1408502).
It is a happy number.
The square root of 551075625 is 23475.
551075625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a tau number, because it is divible by the number of its divisors (45).
It is a self number, because there is not a number n which added to its sum of digits gives 551075625.
It is an unprimeable number.
Almost surely, 2551075625 is an apocalyptic number.
551075625 is the 23475-th square number.
551075625 is the 11738-th centered octagonal number.
It is an amenable number.
551075625 is an frugal number, since it uses more digits than its factorization.
551075625 is an odious number, because the sum of its binary digits is odd.
The cubic root of 551075625 is about 819.8550333657.
The spelling of 551075625 in words is "five hundred fifty-one million, seventy-five thousand, six hundred twenty-five".