1052321 has 2 divisors, whose sum is σ = 1052322. Its totient is φ = 1052320.

The previous prime is 1052309. The next prime is 1052327. The reversal of 1052321 is 1232501.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 577600 + 474721 = 760^2 + 689^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1052321 is a prime.

It is a super-2 number, since 2×1052321² = 2214758974082, which contains 22 as substring.

It is a Sophie Germain prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1052296 and 1052305.

It is not a weakly prime, because it can be changed into another prime (1052327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 526160 + 526161.

It is an arithmetic number, because the mean of its divisors is an integer number (526161).

2^1052321 is an apocalyptic number.

It is an amenable number.

1052321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1052321 is an equidigital number, since it uses as much as digits as its factorization.

1052321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 1052321 is about 1025.8269834626. The cubic root of 1052321 is about 101.7144712327.

Adding to 1052321 its reverse (1232501), we get a palindrome (2284822).

The spelling of 1052321 in words is "one million, fifty-two thousand, three hundred twenty-one".