51663752 has 32 divisors (see below), whose sum is σ = 111861120. Its totient is φ = 21911040.

The previous prime is 51663751. The next prime is 51663791. The reversal of 51663752 is 25736615.

It is not an unprimeable number, because it can be changed into a prime (51663751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 677 + ... + 10187.

It is an arithmetic number, because the mean of its divisors is an integer number (3495660).

Almost surely, 2^51663752 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 51663752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55930560).

51663752 is an abundant number, since it is smaller than the sum of its proper divisors (60197368).

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

51663752 is a wasteful number, since it uses less digits than its factorization.

51663752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9621 (or 9617 counting only the distinct ones).

The product of its digits is 37800, while the sum is 35.

The square root of 51663752 is about 7187.7501347779. The cubic root of 51663752 is about 372.4448564829. Note that the first 3 decimals are identical.

The spelling of 51663752 in words is "fifty-one million, six hundred sixty-three thousand, seven hundred fifty-two".