52520805 has 36 divisors (see below), whose sum is σ = 94591692. Its totient is φ = 27993600.

The previous prime is 52520779. The next prime is 52520813. The reversal of 52520805 is 50802525.

52520805 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 2 ways, for example, as 40947201 + 11573604 = 6399^2 + 3402^2 .

It is not a de Polignac number, because 52520805 - 2⁵ = 52520773 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

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 35 ways as a sum of consecutive naturals, for example, 32005 + ... + 33605.

It is an arithmetic number, because the mean of its divisors is an integer number (2627547).

Almost surely, 2^52520805 is an apocalyptic number.

It is an amenable number.

52520805 is a deficient number, since it is larger than the sum of its proper divisors (42070887).

52520805 is an frugal number, since it uses more digits than its factorization.

52520805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630 (or 1609 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 52520805 is about 7247.1239122841. The cubic root of 52520805 is about 374.4930750477.

The spelling of 52520805 in words is "fifty-two million, five hundred twenty thousand, eight hundred five".