1452221 has 2 divisors, whose sum is σ = 1452222. Its totient is φ = 1452220.

The previous prime is 1452211. The next prime is 1452223. The reversal of 1452221 is 1222541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1452025 + 196 = 1205^2 + 14^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1452221 is a prime.

Together with 1452223, it forms a pair of twin primes.

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 1452221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1452223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 726110 + 726111.

It is an arithmetic number, because the mean of its divisors is an integer number (726111).

2^1452221 is an apocalyptic number.

It is an amenable number.

1452221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1452221 is an equidigital number, since it uses as much as digits as its factorization.

1452221 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1452221 is about 1205.0813250565. The cubic root of 1452221 is about 113.2428795755.

Adding to 1452221 its reverse (1222541), we get a palindrome (2674762).

The spelling of 1452221 in words is "one million, four hundred fifty-two thousand, two hundred twenty-one".