1155541323 has 8 divisors (see below), whose sum is σ = 1631352528. Its totient is φ = 725045504.

The previous prime is 1155541319. The next prime is 1155541327. The reversal of 1155541323 is 3231455511.

It is an interprime number because it is at equal distance from previous prime (1155541319) and next prime (1155541327).

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

It is a cyclic number.

It is not a de Polignac number, because 1155541323 - 2² = 1155541319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1155541327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11328786 + ... + 11328887.

It is an arithmetic number, because the mean of its divisors is an integer number (203919066).

Almost surely, 2^1155541323 is an apocalyptic number.

1155541323 is a deficient number, since it is larger than the sum of its proper divisors (475811205).

1155541323 is a wasteful number, since it uses less digits than its factorization.

1155541323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22657693.

The product of its digits is 9000, while the sum is 30.

The square root of 1155541323 is about 33993.2540807731. The cubic root of 1155541323 is about 1049.3696361515.

Adding to 1155541323 its reverse (3231455511), we get a palindrome (4386996834).

The spelling of 1155541323 in words is "one billion, one hundred fifty-five million, five hundred forty-one thousand, three hundred twenty-three".