53128752 has 40 divisors (see below), whose sum is σ = 137729280. Its totient is φ = 17647680.

The previous prime is 53128741. The next prime is 53128771. The reversal of 53128752 is 25782135.

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, 13149 + ... + 16707.

It is an arithmetic number, because the mean of its divisors is an integer number (3443232).

Almost surely, 2^53128752 is an apocalyptic number.

It is an amenable number.

53128752 is an abundant number, since it is smaller than the sum of its proper divisors (84600528).

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

53128752 is a wasteful number, since it uses less digits than its factorization.

53128752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3881 (or 3875 counting only the distinct ones).

The product of its digits is 16800, while the sum is 33.

The square root of 53128752 is about 7288.9472490889. The cubic root of 53128752 is about 375.9324988227.

The spelling of 53128752 in words is "fifty-three million, one hundred twenty-eight thousand, seven hundred fifty-two".