1151128055 has 96 divisors (see below), whose sum is σ = 1875363840. Its totient is φ = 661478400.

The previous prime is 1151128051. The next prime is 1151128061. The reversal of 1151128055 is 5508211511.

Together with 724235784 it forms a betrothed pair.

It is not a de Polignac number, because 1151128055 - 2² = 1151128051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151128051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4247570 + ... + 4247840.

It is an arithmetic number, because the mean of its divisors is an integer number (19535040).

Almost surely, 2^1151128055 is an apocalyptic number.

1151128055 is a deficient number, since it is larger than the sum of its proper divisors (724235785).

1151128055 is a wasteful number, since it uses less digits than its factorization.

1151128055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 370 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 29.

The square root of 1151128055 is about 33928.2781024914. The cubic root of 1151128055 is about 1048.0320068576.

Adding to 1151128055 its reverse (5508211511), we get a palindrome (6659339566).

The spelling of 1151128055 in words is "one billion, one hundred fifty-one million, one hundred twenty-eight thousand, fifty-five".