252027221 has 2 divisors, whose sum is σ = 252027222. Its totient is φ = 252027220.

The previous prime is 252027163. The next prime is 252027289. The reversal of 252027221 is 122720252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166668100 + 85359121 = 12910^2 + 9239^2 .

It is a cyclic number.

It is not a de Polignac number, because 252027221 - 2²² = 247832917 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252027121) 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 as a sum of consecutive naturals, namely, 126013610 + 126013611.

It is an arithmetic number, because the mean of its divisors is an integer number (126013611).

Almost surely, 2^252027221 is an apocalyptic number.

It is an amenable number.

252027221 is a deficient number, since it is larger than the sum of its proper divisors (1).

252027221 is an equidigital number, since it uses as much as digits as its factorization.

252027221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 252027221 is about 15875.3652241452. The cubic root of 252027221 is about 631.6587020188.

Adding to 252027221 its reverse (122720252), we get a palindrome (374747473).

It can be divided in two parts, 25202 and 7221, that added together give a palindrome (32423).

The spelling of 252027221 in words is "two hundred fifty-two million, twenty-seven thousand, two hundred twenty-one".