1155545233 has 8 divisors (see below), whose sum is σ = 1229861448. Its totient is φ = 1081933824.

The previous prime is 1155545227. The next prime is 1155545239. The reversal of 1155545233 is 3325455511.

It is an interprime number because it is at equal distance from previous prime (1155545227) and next prime (1155545239).

It can be written as a sum of positive squares in 4 ways, for example, as 127509264 + 1028035969 = 11292^2 + 32063^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1155545233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1155545239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172816 + ... + 179377.

It is an arithmetic number, because the mean of its divisors is an integer number (153732681).

Almost surely, 2^1155545233 is an apocalyptic number.

It is an amenable number.

1155545233 is a deficient number, since it is larger than the sum of its proper divisors (74316215).

1155545233 is a wasteful number, since it uses less digits than its factorization.

1155545233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352403.

The product of its digits is 45000, while the sum is 34.

The square root of 1155545233 is about 33993.3115921353. The cubic root of 1155545233 is about 1049.3708197326.

The spelling of 1155545233 in words is "one billion, one hundred fifty-five million, five hundred forty-five thousand, two hundred thirty-three".