51646325 has 12 divisors (see below), whose sum is σ = 64149540. Its totient is φ = 41247360.

The previous prime is 51646307. The next prime is 51646337. The reversal of 51646325 is 52364615.

51646325 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 2337841 + 49308484 = 1529^2 + 7022^2 .

It is not a de Polignac number, because 51646325 - 2⁸ = 51646069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51646291 and 51646300.

It is a congruent number.

It is an unprimeable number.

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, 17561 + ... + 20289.

It is an arithmetic number, because the mean of its divisors is an integer number (5345795).

Almost surely, 2^51646325 is an apocalyptic number.

It is an amenable number.

51646325 is a deficient number, since it is larger than the sum of its proper divisors (12503215).

51646325 is a wasteful number, since it uses less digits than its factorization.

51646325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3496 (or 3491 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 51646325 is about 7186.5377616763. The cubic root of 51646325 is about 372.4029745948.

The spelling of 51646325 in words is "fifty-one million, six hundred forty-six thousand, three hundred twenty-five".