1155131155 has 8 divisors (see below), whose sum is σ = 1388303712. Its totient is φ = 922674048.

The previous prime is 1155131149. The next prime is 1155131177. The reversal of 1155131155 is 5511315511.

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 1155131155 - 2⁹ = 1155130643 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175302 + ... + 181771.

It is an arithmetic number, because the mean of its divisors is an integer number (173537964).

Almost surely, 2^1155131155 is an apocalyptic number.

1155131155 is a deficient number, since it is larger than the sum of its proper divisors (233172557).

1155131155 is an equidigital number, since it uses as much as digits as its factorization.

1155131155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357725.

The product of its digits is 1875, while the sum is 28.

The square root of 1155131155 is about 33987.2204659340. The cubic root of 1155131155 is about 1049.2454609350.

Adding to 1155131155 its reverse (5511315511), we get a palindrome (6666446666).

The spelling of 1155131155 in words is "one billion, one hundred fifty-five million, one hundred thirty-one thousand, one hundred fifty-five".