51003902 has 8 divisors (see below), whose sum is σ = 76933800. Its totient is φ = 25359304.

The previous prime is 51003881. The next prime is 51003913. The reversal of 51003902 is 20930015.

51003902 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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 3 ways as a sum of consecutive naturals, for example, 70877 + ... + 71592.

It is an arithmetic number, because the mean of its divisors is an integer number (9616725).

Almost surely, 2^51003902 is an apocalyptic number.

51003902 is a deficient number, since it is larger than the sum of its proper divisors (25929898).

51003902 is a wasteful number, since it uses less digits than its factorization.

51003902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142650.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 51003902 is about 7141.7016179619. The cubic root of 51003902 is about 370.8524343932.

Adding to 51003902 its reverse (20930015), we get a palindrome (71933917).

The spelling of 51003902 in words is "fifty-one million, three thousand, nine hundred two".