52404820 has 24 divisors (see below), whose sum is σ = 118516104. Its totient is φ = 19349376.

The previous prime is 52404811. The next prime is 52404841. The reversal of 52404820 is 2840425.

It is a happy number.

52404820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4822416 + 47582404 = 2196^2 + 6898^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100519 + ... + 101038.

It is an arithmetic number, because the mean of its divisors is an integer number (4938171).

Almost surely, 2^52404820 is an apocalyptic number.

It is an amenable number.

52404820 is an abundant number, since it is smaller than the sum of its proper divisors (66111284).

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

52404820 is a wasteful number, since it uses less digits than its factorization.

52404820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201579 (or 201577 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 52404820 is about 7239.1173495116. The cubic root of 52404820 is about 374.2171996593.

The spelling of 52404820 in words is "fifty-two million, four hundred four thousand, eight hundred twenty".