1155502409 has 2 divisors, whose sum is σ = 1155502410. Its totient is φ = 1155502408.

The previous prime is 1155502373. The next prime is 1155502417. The reversal of 1155502409 is 9042055511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 948948025 + 206554384 = 30805^2 + 14372^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1155502409 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1155502429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577751204 + 577751205.

It is an arithmetic number, because the mean of its divisors is an integer number (577751205).

Almost surely, 2^1155502409 is an apocalyptic number.

It is an amenable number.

1155502409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155502409 is an equidigital number, since it uses as much as digits as its factorization.

1155502409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 1155502409 is about 33992.6816976831. The cubic root of 1155502409 is about 1049.3578564982.

The spelling of 1155502409 in words is "one billion, one hundred fifty-five million, five hundred two thousand, four hundred nine".