51212604 has 24 divisors (see below), whose sum is σ = 120359680. Its totient is φ = 16947504.

The previous prime is 51212599. The next prime is 51212627. The reversal of 51212604 is 40621215.

51212604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 13684 + ... + 17019.

Almost surely, 2^51212604 is an apocalyptic number.

It is an amenable number.

51212604 is an abundant number, since it is smaller than the sum of its proper divisors (69147076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51212604 is a wasteful number, since it uses less digits than its factorization.

51212604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30849 (or 30847 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 51212604 is about 7156.2982050778. The cubic root of 51212604 is about 371.3575742858.

Adding to 51212604 its reverse (40621215), we get a palindrome (91833819).

The spelling of 51212604 in words is "fifty-one million, two hundred twelve thousand, six hundred four".