1522201 has 2 divisors, whose sum is σ = 1522202. Its totient is φ = 1522200.

The previous prime is 1522187. The next prime is 1522249. The reversal of 1522201 is 1022251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1498176 + 24025 = 1224^2 + 155^2 .

It is an emirp because it is prime and its reverse (1022251) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1522201 - 2¹¹ = 1520153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1522601) 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, 761100 + 761101.

It is an arithmetic number, because the mean of its divisors is an integer number (761101).

2^1522201 is an apocalyptic number.

It is an amenable number.

1522201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1522201 is an equidigital number, since it uses as much as digits as its factorization.

1522201 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 1522201 is about 1233.7751010618. The cubic root of 1522201 is about 115.0334118418.

Adding to 1522201 its reverse (1022251), we get a palindrome (2544452).

The spelling of 1522201 in words is "one million, five hundred twenty-two thousand, two hundred one".