51688926 has 24 divisors (see below), whose sum is σ = 115020984. Its totient is φ = 16763760.

The previous prime is 51688921. The next prime is 51688927. The reversal of 51688926 is 62988615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51688921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38140 + ... + 39471.

It is an arithmetic number, because the mean of its divisors is an integer number (4792541).

Almost surely, 2^51688926 is an apocalyptic number.

51688926 is an abundant number, since it is smaller than the sum of its proper divisors (63332058).

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

51688926 is a wasteful number, since it uses less digits than its factorization.

51688926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77656 (or 77653 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 51688926 is about 7189.5010953473. The cubic root of 51688926 is about 372.5053399231.

The spelling of 51688926 in words is "fifty-one million, six hundred eighty-eight thousand, nine hundred twenty-six".