51689996 has 12 divisors (see below), whose sum is σ = 95778648. Its totient is φ = 24324672.

The previous prime is 51689987. The next prime is 51690011. The reversal of 51689996 is 69998615.

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 3 ways as a sum of consecutive naturals, for example, 380006 + ... + 380141.

It is an arithmetic number, because the mean of its divisors is an integer number (7981554).

Almost surely, 2^51689996 is an apocalyptic number.

It is an amenable number.

51689996 is a deficient number, since it is larger than the sum of its proper divisors (44088652).

51689996 is a wasteful number, since it uses less digits than its factorization.

51689996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760168 (or 760166 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 53.

The square root of 51689996 is about 7189.5755090269. The cubic root of 51689996 is about 372.5079102865.

The spelling of 51689996 in words is "fifty-one million, six hundred eighty-nine thousand, nine hundred ninety-six".