52650221 has 8 divisors (see below), whose sum is σ = 56908824. Its totient is φ = 48421440.

The previous prime is 52650217. The next prime is 52650229. The reversal of 52650221 is 12205625.

52650221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6817321 + 45832900 = 2611^2 + 6770^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52650221 - 2² = 52650217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52650229) 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 7 ways as a sum of consecutive naturals, for example, 3710 + ... + 10911.

It is an arithmetic number, because the mean of its divisors is an integer number (7113603).

Almost surely, 2^52650221 is an apocalyptic number.

It is an amenable number.

52650221 is a deficient number, since it is larger than the sum of its proper divisors (4258603).

52650221 is a wasteful number, since it uses less digits than its factorization.

52650221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14911.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 52650221 is about 7256.0472021618. The cubic root of 52650221 is about 374.8004176491.

Adding to 52650221 its reverse (12205625), we get a palindrome (64855846).

The spelling of 52650221 in words is "fifty-two million, six hundred fifty thousand, two hundred twenty-one".