252040211 has 2 divisors, whose sum is σ = 252040212. Its totient is φ = 252040210.

The previous prime is 252040193. The next prime is 252040219. The reversal of 252040211 is 112040252.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252040211 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 252040211.

It is not a weakly prime, because it can be changed into another prime (252040219) 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, 126020105 + 126020106.

It is an arithmetic number, because the mean of its divisors is an integer number (126020106).

Almost surely, 2^252040211 is an apocalyptic number.

252040211 is a deficient number, since it is larger than the sum of its proper divisors (1).

252040211 is an equidigital number, since it uses as much as digits as its factorization.

252040211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 252040211 is about 15875.7743433194. The cubic root of 252040211 is about 631.6695541608.

Adding to 252040211 its reverse (112040252), we get a palindrome (364080463).

The spelling of 252040211 in words is "two hundred fifty-two million, forty thousand, two hundred eleven".