52532221 has 16 divisors (see below), whose sum is σ = 61591680. Its totient is φ = 43876800.

The previous prime is 52532209. The next prime is 52532237. The reversal of 52532221 is 12223525.

It is a cyclic number.

It is not a de Polignac number, because 52532221 - 2⁹ = 52531709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52532192 and 52532201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52532281) 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, 46815 + ... + 47923.

It is an arithmetic number, because the mean of its divisors is an integer number (3849480).

Almost surely, 2^52532221 is an apocalyptic number.

It is an amenable number.

52532221 is a deficient number, since it is larger than the sum of its proper divisors (9059459).

52532221 is a wasteful number, since it uses less digits than its factorization.

52532221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284.

The product of its digits is 1200, while the sum is 22.

The square root of 52532221 is about 7247.9114922852. The cubic root of 52532221 is about 374.5202065386.

Adding to 52532221 its reverse (12223525), we get a palindrome (64755746).

The spelling of 52532221 in words is "fifty-two million, five hundred thirty-two thousand, two hundred twenty-one".