1115321 has 2 divisors, whose sum is σ = 1115322. Its totient is φ = 1115320.

The previous prime is 1115299. The next prime is 1115327. The reversal of 1115321 is 1235111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1073296 + 42025 = 1036^2 + 205^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115321 - 2¹⁰ = 1114297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1115296 and 1115305.

It is not a weakly prime, because it can be changed into another prime (1115327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557660 + 557661.

It is an arithmetic number, because the mean of its divisors is an integer number (557661).

2^1115321 is an apocalyptic number.

It is an amenable number.

1115321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115321 is an equidigital number, since it uses as much as digits as its factorization.

1115321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30, while the sum is 14.

The square root of 1115321 is about 1056.0875910643. The cubic root of 1115321 is about 103.7050630381.

The spelling of 1115321 in words is "one million, one hundred fifteen thousand, three hundred twenty-one".