52303221 has 6 divisors (see below), whose sum is σ = 75549110. Its totient is φ = 34868808.

The previous prime is 52303217. The next prime is 52303241. The reversal of 52303221 is 12230325.

It can be written as a sum of positive squares in only one way, i.e., 43956900 + 8346321 = 6630^2 + 2889^2 .

It is not a de Polignac number, because 52303221 - 2² = 52303217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52303194 and 52303203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52303241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2905726 + ... + 2905743.

Almost surely, 2^52303221 is an apocalyptic number.

It is an amenable number.

52303221 is a deficient number, since it is larger than the sum of its proper divisors (23245889).

52303221 is a wasteful number, since it uses less digits than its factorization.

52303221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5811475 (or 5811472 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 52303221 is about 7232.0965839790. The cubic root of 52303221 is about 373.9752073512.

Adding to 52303221 its reverse (12230325), we get a palindrome (64533546).

The spelling of 52303221 in words is "fifty-two million, three hundred three thousand, two hundred twenty-one".