51006425 has 12 divisors (see below), whose sum is σ = 63677100. Its totient is φ = 40528320.

The previous prime is 51006413. The next prime is 51006427. The reversal of 51006425 is 52460015.

51006425 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 12544 + 50993881 = 112^2 + 7141^2 .

It is not a de Polignac number, because 51006425 - 2¹⁶ = 50940889 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51006425.

It is not an unprimeable number, because it can be changed into a prime (51006427) 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, 3122 + ... + 10571.

It is an arithmetic number, because the mean of its divisors is an integer number (5306425).

Almost surely, 2^51006425 is an apocalyptic number.

It is an amenable number.

51006425 is a deficient number, since it is larger than the sum of its proper divisors (12670675).

51006425 is a wasteful number, since it uses less digits than its factorization.

51006425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13852 (or 13847 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 51006425 is about 7141.8782543530. The cubic root of 51006425 is about 370.8585492539.

The spelling of 51006425 in words is "fifty-one million, six thousand, four hundred twenty-five".