1151551232 has 72 divisors (see below), whose sum is σ = 2487875040. Its totient is φ = 528814080.

The previous prime is 1151551211. The next prime is 1151551243. The reversal of 1151551232 is 2321551511.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent 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, 761357 + ... + 762867.

It is an arithmetic number, because the mean of its divisors is an integer number (34553820).

Almost surely, 2^1151551232 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 1151551232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1243937520).

1151551232 is an abundant number, since it is smaller than the sum of its proper divisors (1336323808).

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

1151551232 is a wasteful number, since it uses less digits than its factorization.

1151551232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1769 (or 1755 counting only the distinct ones).

The product of its digits is 1500, while the sum is 26.

The square root of 1151551232 is about 33934.5138759936. The cubic root of 1151551232 is about 1048.1604167546.

The spelling of 1151551232 in words is "one billion, one hundred fifty-one million, five hundred fifty-one thousand, two hundred thirty-two".