52121225 has 12 divisors (see below), whose sum is σ = 69602316. Its totient is φ = 38489280.

The previous prime is 52121221. The next prime is 52121257. The reversal of 52121225 is 52212125.

It is a happy number.

52121225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 19642624 + 32478601 = 4432^2 + 5699^2 .

It is not a de Polignac number, because 52121225 - 2² = 52121221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 52121197 and 52121206.

It is not an unprimeable number, because it can be changed into a prime (52121221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79862 + ... + 80511.

It is an arithmetic number, because the mean of its divisors is an integer number (5800193).

Almost surely, 2^52121225 is an apocalyptic number.

It is an amenable number.

52121225 is a deficient number, since it is larger than the sum of its proper divisors (17481091).

52121225 is a wasteful number, since it uses less digits than its factorization.

52121225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160396 (or 160391 counting only the distinct ones).

The product of its digits is 400, while the sum is 20.

The square root of 52121225 is about 7219.5030992444. The cubic root of 52121225 is about 373.5409378035.

The spelling of 52121225 in words is "fifty-two million, one hundred twenty-one thousand, two hundred twenty-five".