52020865 has 16 divisors (see below), whose sum is σ = 67422096. Its totient is φ = 38304000.

The previous prime is 52020827. The next prime is 52020887. The reversal of 52020865 is 56802025.

It can be written as a sum of positive squares in 8 ways, for example, as 30426256 + 21594609 = 5516^2 + 4647^2 .

It is not a de Polignac number, because 52020865 - 2⁷ = 52020737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 26415 + ... + 28315.

It is an arithmetic number, because the mean of its divisors is an integer number (4213881).

Almost surely, 2^52020865 is an apocalyptic number.

It is an amenable number.

52020865 is a deficient number, since it is larger than the sum of its proper divisors (15401231).

52020865 is a wasteful number, since it uses less digits than its factorization.

52020865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2340.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 52020865 is about 7212.5491332815. The cubic root of 52020865 is about 373.3010313428.

The spelling of 52020865 in words is "fifty-two million, twenty thousand, eight hundred sixty-five".