1155089155 has 32 divisors (see below), whose sum is σ = 1573613568. Its totient is φ = 806582400.

The previous prime is 1155089149. The next prime is 1155089161. The reversal of 1155089155 is 5519805511.

It is an interprime number because it is at equal distance from previous prime (1155089149) and next prime (1155089161).

It is not a de Polignac number, because 1155089155 - 2¹¹ = 1155087107 is a prime.

It is a super-2 number, since 2×1155089155² = 2668461911997228050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132790 + ... + 141220.

It is an arithmetic number, because the mean of its divisors is an integer number (49175424).

Almost surely, 2^1155089155 is an apocalyptic number.

1155089155 is a deficient number, since it is larger than the sum of its proper divisors (418524413).

1155089155 is a wasteful number, since it uses less digits than its factorization.

1155089155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8547.

The product of its (nonzero) digits is 45000, while the sum is 40.

The square root of 1155089155 is about 33986.6025810171. The cubic root of 1155089155 is about 1049.2327440981.

Subtracting 1155089155 from its reverse (5519805511), we obtain a square (4364716356 = 66066²).

The spelling of 1155089155 in words is "one billion, one hundred fifty-five million, eighty-nine thousand, one hundred fifty-five".