5636521 has 16 divisors (see below), whose sum is σ = 6552000. Its totient is φ = 4795200.

The previous prime is 5636471. The next prime is 5636539. The reversal of 5636521 is 1256365.

It is a cyclic number.

It is not a de Polignac number, because 5636521 - 2⁹ = 5636009 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

Its product of digits (5400) is a multiple of the sum of its prime divisors (360).

It is a self number, because there is not a number n which added to its sum of digits gives 5636521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5636551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31051 + ... + 31231.

It is an arithmetic number, because the mean of its divisors is an integer number (409500).

Almost surely, 2^5636521 is an apocalyptic number.

It is an amenable number.

5636521 is a deficient number, since it is larger than the sum of its proper divisors (915479).

5636521 is a wasteful number, since it uses less digits than its factorization.

5636521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360.

The product of its digits is 5400, while the sum is 28.

The square root of 5636521 is about 2374.1358427857. The cubic root of 5636521 is about 177.9660015864.

The spelling of 5636521 in words is "five million, six hundred thirty-six thousand, five hundred twenty-one".