1155449 has 2 divisors, whose sum is σ = 1155450. Its totient is φ = 1155448.

The previous prime is 1155437. The next prime is 1155457. The reversal of 1155449 is 9445511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1087849 + 67600 = 1043^2 + 260^2 .

It is an emirp because it is prime and its reverse (9445511) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1155449 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1155419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577724 + 577725.

It is an arithmetic number, because the mean of its divisors is an integer number (577725).

2^1155449 is an apocalyptic number.

It is an amenable number.

1155449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155449 is an equidigital number, since it uses as much as digits as its factorization.

1155449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 29.

The square root of 1155449 is about 1074.9181364178. The cubic root of 1155449 is about 104.9341688634.

The spelling of 1155449 in words is "one million, one hundred fifty-five thousand, four hundred forty-nine".