1155055132 has 48 divisors (see below), whose sum is σ = 2524419072. Its totient is φ = 449254080.

The previous prime is 1155055093. The next prime is 1155055171. The reversal of 1155055132 is 2315505511.

It is an interprime number because it is at equal distance from previous prime (1155055093) and next prime (1155055171).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 1155055132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198253 + ... + 203995.

It is an arithmetic number, because the mean of its divisors is an integer number (52592064).

Almost surely, 2^1155055132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1155055132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1262209536).

1155055132 is an abundant number, since it is smaller than the sum of its proper divisors (1369363940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1155055132 is a wasteful number, since it uses less digits than its factorization.

1155055132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6418 (or 6416 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 1155055132 is about 33986.1020418641. The cubic root of 1155055132 is about 1049.2224423259. Note that the first 3 decimals are identical.

The spelling of 1155055132 in words is "one billion, one hundred fifty-five million, fifty-five thousand, one hundred thirty-two".