1155522041 has 4 divisors (see below), whose sum is σ = 1162882212. Its totient is φ = 1148161872.

The previous prime is 1155522029. The next prime is 1155522061. The reversal of 1155522041 is 1402255511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1402255511 = 1931 ⋅726181.

It can be written as a sum of positive squares in 2 ways, for example, as 146506816 + 1009015225 = 12104^2 + 31765^2 .

It is a cyclic number.

It is not a de Polignac number, because 1155522041 - 2²⁶ = 1088413177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1155522041.

It is not an unprimeable number, because it can be changed into a prime (1155522061) 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, 3679850 + ... + 3680163.

It is an arithmetic number, because the mean of its divisors is an integer number (290720553).

Almost surely, 2^1155522041 is an apocalyptic number.

It is an amenable number.

1155522041 is a deficient number, since it is larger than the sum of its proper divisors (7360171).

1155522041 is an equidigital number, since it uses as much as digits as its factorization.

1155522041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7360170.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 1155522041 is about 33992.9704644946. The cubic root of 1155522041 is about 1049.3637993321.

Adding to 1155522041 its reverse (1402255511), we get a palindrome (2557777552).

The spelling of 1155522041 in words is "one billion, one hundred fifty-five million, five hundred twenty-two thousand, forty-one".