51203938 has 8 divisors (see below), whose sum is σ = 76842540. Its totient is φ = 25589760.

The previous prime is 51203921. The next prime is 51203939. The reversal of 51203938 is 83930215.

It is a happy number.

51203938 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 2 ways, for example, as 45927729 + 5276209 = 6777^2 + 2297^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (51203939) 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 3 ways as a sum of consecutive naturals, for example, 618 + ... + 10138.

Almost surely, 2^51203938 is an apocalyptic number.

51203938 is a deficient number, since it is larger than the sum of its proper divisors (25638602).

51203938 is a wasteful number, since it uses less digits than its factorization.

51203938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12212.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 51203938 is about 7155.6926988238. The cubic root of 51203938 is about 371.3366265371.

The spelling of 51203938 in words is "fifty-one million, two hundred three thousand, nine hundred thirty-eight".