1115522155 has 8 divisors (see below), whose sum is σ = 1460319984. Its totient is φ = 811288800.

The previous prime is 1115522147. The next prime is 1115522179. The reversal of 1115522155 is 5512255111.

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

It is not a de Polignac number, because 1115522155 - 2³ = 1115522147 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, 10141056 + ... + 10141165.

It is an arithmetic number, because the mean of its divisors is an integer number (182539998).

Almost surely, 2^1115522155 is an apocalyptic number.

1115522155 is a deficient number, since it is larger than the sum of its proper divisors (344797829).

1115522155 is a wasteful number, since it uses less digits than its factorization.

1115522155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20282237.

The product of its digits is 2500, while the sum is 28.

The square root of 1115522155 is about 33399.4334532788. The cubic root of 1115522155 is about 1037.1129727853.

Adding to 1115522155 its reverse (5512255111), we get a palindrome (6627777266).

The spelling of 1115522155 in words is "one billion, one hundred fifteen million, five hundred twenty-two thousand, one hundred fifty-five".