51688112 has 40 divisors (see below), whose sum is σ = 117554976. Its totient is φ = 21551616.

The previous prime is 51688103. The next prime is 51688139. The reversal of 51688112 is 21188615.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2093 + ... + 10380.

Almost surely, 2^51688112 is an apocalyptic number.

It is an amenable number.

51688112 is an abundant number, since it is smaller than the sum of its proper divisors (65866864).

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

51688112 is a wasteful number, since it uses less digits than its factorization.

51688112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12525 (or 12519 counting only the distinct ones).

The product of its digits is 3840, while the sum is 32.

The square root of 51688112 is about 7189.4444847985. Note that the first 4 decimals coincide. The cubic root of 51688112 is about 372.5033845015.

The spelling of 51688112 in words is "fifty-one million, six hundred eighty-eight thousand, one hundred twelve".