52021648 has 20 divisors (see below), whose sum is σ = 115191040. Its totient is φ = 22294944.

The previous prime is 52021643. The next prime is 52021687. The reversal of 52021648 is 84612025.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (52021643) 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 3 ways as a sum of consecutive naturals, for example, 232128 + ... + 232351.

It is an arithmetic number, because the mean of its divisors is an integer number (5759552).

Almost surely, 2^52021648 is an apocalyptic number.

It is an amenable number.

52021648 is an abundant number, since it is smaller than the sum of its proper divisors (63169392).

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

52021648 is a wasteful number, since it uses less digits than its factorization.

52021648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464494 (or 464488 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 52021648 is about 7212.6034134701. The cubic root of 52021648 is about 373.3029042659.

The spelling of 52021648 in words is "fifty-two million, twenty-one thousand, six hundred forty-eight".