51103216 has 20 divisors (see below), whose sum is σ = 101689672. Its totient is φ = 24860736.

The previous prime is 51103201. The next prime is 51103237. The reversal of 51103216 is 61230115.

51103216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51103216² = 5223077371085312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51103193 and 51103202.

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, 42570 + ... + 43753.

Almost surely, 2^51103216 is an apocalyptic number.

It is an amenable number.

51103216 is a deficient number, since it is larger than the sum of its proper divisors (50586456).

51103216 is a wasteful number, since it uses less digits than its factorization.

51103216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86368 (or 86362 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 51103216 is about 7148.6513413370. The cubic root of 51103216 is about 371.0929843484.

The spelling of 51103216 in words is "fifty-one million, one hundred three thousand, two hundred sixteen".