52544521 has 4 divisors (see below), whose sum is σ = 52630852. Its totient is φ = 52458192.

The previous prime is 52544497. The next prime is 52544533. The reversal of 52544521 is 12544525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3474496 + 49070025 = 1864^2 + 7005^2 .

It is a cyclic number.

It is not a de Polignac number, because 52544521 - 2¹¹ = 52542473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52544521.

It is not an unprimeable number, because it can be changed into a prime (52544321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42246 + ... + 43471.

It is an arithmetic number, because the mean of its divisors is an integer number (13157713).

Almost surely, 2^52544521 is an apocalyptic number.

It is an amenable number.

52544521 is a deficient number, since it is larger than the sum of its proper divisors (86331).

52544521 is an equidigital number, since it uses as much as digits as its factorization.

52544521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86330.

The product of its digits is 8000, while the sum is 28.

The square root of 52544521 is about 7248.7599629178. The cubic root of 52544521 is about 374.5494345626.

The spelling of 52544521 in words is "fifty-two million, five hundred forty-four thousand, five hundred twenty-one".