52235221 has 2 divisors, whose sum is σ = 52235222. Its totient is φ = 52235220.

The previous prime is 52235213. The next prime is 52235299. The reversal of 52235221 is 12253225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52200625 + 34596 = 7225^2 + 186^2 .

It is a cyclic number.

It is not a de Polignac number, because 52235221 - 2³ = 52235213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52235192 and 52235201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52235321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26117610 + 26117611.

It is an arithmetic number, because the mean of its divisors is an integer number (26117611).

Almost surely, 2^52235221 is an apocalyptic number.

It is an amenable number.

52235221 is a deficient number, since it is larger than the sum of its proper divisors (1).

52235221 is an equidigital number, since it uses as much as digits as its factorization.

52235221 is an evil number, because the sum of its binary digits is even.

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

The square root of 52235221 is about 7227.3937902954. The cubic root of 52235221 is about 373.8130672871.

Adding to 52235221 its reverse (12253225), we get a palindrome (64488446).

The spelling of 52235221 in words is "fifty-two million, two hundred thirty-five thousand, two hundred twenty-one".