1131534552 has 64 divisors (see below), whose sum is σ = 3013355520. Its totient is φ = 352844288.

The previous prime is 1131534533. The next prime is 1131534563. The reversal of 1131534552 is 2554351311.

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, 59833 + ... + 76439.

It is an arithmetic number, because the mean of its divisors is an integer number (47083680).

Almost surely, 2^1131534552 is an apocalyptic number.

1131534552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131534552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1506677760).

1131534552 is an abundant number, since it is smaller than the sum of its proper divisors (1881820968).

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

1131534552 is a wasteful number, since it uses less digits than its factorization.

1131534552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16800 (or 16796 counting only the distinct ones).

The product of its digits is 9000, while the sum is 30.

The square root of 1131534552 is about 33638.2899684273. The cubic root of 1131534552 is about 1042.0517164685.

Adding to 1131534552 its reverse (2554351311), we get a palindrome (3685885863).

The spelling of 1131534552 in words is "one billion, one hundred thirty-one million, five hundred thirty-four thousand, five hundred fifty-two".