51688848 has 40 divisors (see below), whose sum is σ = 133933888. Its totient is φ = 17177472.

The previous prime is 51688837. The next prime is 51688849. The reversal of 51688848 is 84888615.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 51688797 and 51688806.

It is not an unprimeable number, because it can be changed into a prime (51688849) by changing a digit.

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, 16461 + ... + 19347.

Almost surely, 2^51688848 is an apocalyptic number.

It is an amenable number.

51688848 is an abundant number, since it is smaller than the sum of its proper divisors (82245040).

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

51688848 is a wasteful number, since it uses less digits than its factorization.

51688848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3271 (or 3265 counting only the distinct ones).

The product of its digits is 491520, while the sum is 48.

The square root of 51688848 is about 7189.4956707686. The cubic root of 51688848 is about 372.5051525495.

The spelling of 51688848 in words is "fifty-one million, six hundred eighty-eight thousand, eight hundred forty-eight".