1052221 has 2 divisors, whose sum is σ = 1052222. Its totient is φ = 1052220.

The previous prime is 1052203. The next prime is 1052231. The reversal of 1052221 is 1222501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1028196 + 24025 = 1014^2 + 155^2 .

It is a cyclic number.

It is not a de Polignac number, because 1052221 - 2⁹ = 1051709 is a prime.

It is a super-2 number, since 2×1052221² = 2214338065682, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1052231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 526110 + 526111.

It is an arithmetic number, because the mean of its divisors is an integer number (526111).

2^1052221 is an apocalyptic number.

It is an amenable number.

1052221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1052221 is an equidigital number, since it uses as much as digits as its factorization.

1052221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1052221 is about 1025.7782411418. The cubic root of 1052221 is about 101.7112492218.

Adding to 1052221 its reverse (1222501), we get a palindrome (2274722).

The spelling of 1052221 in words is "one million, fifty-two thousand, two hundred twenty-one".