51108916 has 12 divisors (see below), whose sum is σ = 89597088. Its totient is φ = 25509752.

The previous prime is 51108913. The next prime is 51108931. The reversal of 51108916 is 61980115.

51108916 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 2×51108916² = 5224242589390112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51108913) 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, 8536 + ... + 13231.

It is an arithmetic number, because the mean of its divisors is an integer number (7466424).

Almost surely, 2^51108916 is an apocalyptic number.

It is an amenable number.

51108916 is a deficient number, since it is larger than the sum of its proper divisors (38488172).

51108916 is a wasteful number, since it uses less digits than its factorization.

51108916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22358 (or 22356 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 31.

The square root of 51108916 is about 7149.0500068191. The cubic root of 51108916 is about 371.1067809450.

The spelling of 51108916 in words is "fifty-one million, one hundred eight thousand, nine hundred sixteen".