52204221 has 12 divisors (see below), whose sum is σ = 75491520. Its totient is φ = 34763400.

The previous prime is 52204219. The next prime is 52204223. The reversal of 52204221 is 12240225.

It is an interprime number because it is at equal distance from previous prime (52204219) and next prime (52204223).

It is not a de Polignac number, because 52204221 - 2¹ = 52204219 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 52204194 and 52204203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52204223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6700 + ... + 12218.

It is an arithmetic number, because the mean of its divisors is an integer number (6290960).

Almost surely, 2^52204221 is an apocalyptic number.

It is an amenable number.

52204221 is a deficient number, since it is larger than the sum of its proper divisors (23287299).

52204221 is a wasteful number, since it uses less digits than its factorization.

52204221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6576 (or 6573 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 52204221 is about 7225.2488538458. The cubic root of 52204221 is about 373.7391037938.

Adding to 52204221 its reverse (12240225), we get a palindrome (64444446).

It can be divided in two parts, 52204 and 221, that added together give a palindrome (52425).

The spelling of 52204221 in words is "fifty-two million, two hundred four thousand, two hundred twenty-one".