1322521 has 2 divisors, whose sum is σ = 1322522. Its totient is φ = 1322520.

The previous prime is 1322507. The next prime is 1322527. The reversal of 1322521 is 1252231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1254400 + 68121 = 1120^2 + 261^2 .

It is a cyclic number.

It is not a de Polignac number, because 1322521 - 2¹⁵ = 1289753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1322495 and 1322504.

It is not a weakly prime, because it can be changed into another prime (1322527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661260 + 661261.

It is an arithmetic number, because the mean of its divisors is an integer number (661261).

2^1322521 is an apocalyptic number.

It is an amenable number.

1322521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322521 is an equidigital number, since it uses as much as digits as its factorization.

1322521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120, while the sum is 16.

The square root of 1322521 is about 1150.0091303985. The cubic root of 1322521 is about 109.7659209680.

Adding to 1322521 its reverse (1252231), we get a palindrome (2574752).

The spelling of 1322521 in words is "one million, three hundred twenty-two thousand, five hundred twenty-one".