5565021 has 16 divisors (see below), whose sum is σ = 9251328. Its totient is φ = 2890800.

The previous prime is 5565019. The next prime is 5565023. The reversal of 5565021 is 1205655.

5565021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (5565019) and next prime (5565023).

It is not a de Polignac number, because 5565021 - 2¹ = 5565019 is a prime.

It is a Curzon number.

5565021 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 5564982 and 5565000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5565023) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 11815 + ... + 12276.

It is an arithmetic number, because the mean of its divisors is an integer number (578208).

Almost surely, 2^5565021 is an apocalyptic number.

It is an amenable number.

5565021 is a deficient number, since it is larger than the sum of its proper divisors (3686307).

5565021 is a wasteful number, since it uses less digits than its factorization.

5565021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24112.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 5565021 is about 2359.0296734039. The cubic root of 5565021 is about 177.2102898158.

The spelling of 5565021 in words is "five million, five hundred sixty-five thousand, twenty-one".