51778752 has 56 divisors (see below), whose sum is σ = 139275312. Its totient is φ = 16972800.

The previous prime is 51778729. The next prime is 51778801. The reversal of 51778752 is 25787715.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9502 + ... + 13922.

Almost surely, 2^51778752 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51778752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69637656).

51778752 is an abundant number, since it is smaller than the sum of its proper divisors (87496560).

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

51778752 is a wasteful number, since it uses less digits than its factorization.

51778752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4497 (or 4487 counting only the distinct ones).

The product of its digits is 137200, while the sum is 42.

The square root of 51778752 is about 7195.7454096153. The cubic root of 51778752 is about 372.7209973381.

The spelling of 51778752 in words is "fifty-one million, seven hundred seventy-eight thousand, seven hundred fifty-two".