1153332520 has 64 divisors (see below), whose sum is σ = 2644617600. Its totient is φ = 452578560.

The previous prime is 1153332503. The next prime is 1153332529. The reversal of 1153332520 is 252333511.

It is not an unprimeable number, because it can be changed into a prime (1153332529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 643786 + ... + 645574.

It is an arithmetic number, because the mean of its divisors is an integer number (41322150).

Almost surely, 2^1153332520 is an apocalyptic number.

1153332520 is a gapful number since it is divisible by the number (10) 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 1153332520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1322308800).

1153332520 is an abundant number, since it is smaller than the sum of its proper divisors (1491285080).

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

1153332520 is a wasteful number, since it uses less digits than its factorization.

1153332520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2098 (or 2094 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 1153332520 is about 33960.7496972608. The cubic root of 1153332520 is about 1048.7005906365.

Subtracting from 1153332520 its reverse (252333511), we obtain a palindrome (900999009).

The spelling of 1153332520 in words is "one billion, one hundred fifty-three million, three hundred thirty-two thousand, five hundred twenty".