51246225 has 36 divisors (see below), whose sum is σ = 92175772. Its totient is φ = 27216000.

The previous prime is 51246199. The next prime is 51246227. The reversal of 51246225 is 52264215.

51246225 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 14085009 + 37161216 = 3753^2 + 6096^2 .

It is not a de Polignac number, because 51246225 - 2⁸ = 51245969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51246227) 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 35 ways as a sum of consecutive naturals, for example, 94455 + ... + 94995.

Almost surely, 2^51246225 is an apocalyptic number.

It is an amenable number.

51246225 is a deficient number, since it is larger than the sum of its proper divisors (40929547).

51246225 is a wasteful number, since it uses less digits than its factorization.

51246225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978 (or 970 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 51246225 is about 7158.6468693462. The cubic root of 51246225 is about 371.4388217445.

The spelling of 51246225 in words is "fifty-one million, two hundred forty-six thousand, two hundred twenty-five".