1155048173 has 4 divisors (see below), whose sum is σ = 1159218300. Its totient is φ = 1150878048.

The previous prime is 1155048137. The next prime is 1155048199. The reversal of 1155048173 is 3718405511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3718405511 = 863 ⋅4308697.

It can be written as a sum of positive squares in 2 ways, for example, as 167391844 + 987656329 = 12938^2 + 31427^2 .

It is a cyclic number.

It is not a de Polignac number, because 1155048173 - 2¹⁰ = 1155047149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155048073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2084648 + ... + 2085201.

It is an arithmetic number, because the mean of its divisors is an integer number (289804575).

Almost surely, 2^1155048173 is an apocalyptic number.

It is an amenable number.

1155048173 is a deficient number, since it is larger than the sum of its proper divisors (4170127).

1155048173 is an equidigital number, since it uses as much as digits as its factorization.

1155048173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4170126.

The product of its (nonzero) digits is 16800, while the sum is 35.

The square root of 1155048173 is about 33985.9996616254. Note that the first 3 decimals coincide. The cubic root of 1155048173 is about 1049.2203351960.

The spelling of 1155048173 in words is "one billion, one hundred fifty-five million, forty-eight thousand, one hundred seventy-three".