1155520960 has 112 divisors (see below), whose sum is σ = 3027651552. Its totient is φ = 420034560.

The previous prime is 1155520931. The next prime is 1155520969. The reversal of 1155520960 is 690255511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155520969) 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, 424564 + ... + 427276.

Almost surely, 2^1155520960 is an apocalyptic number.

1155520960 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 1155520960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1513825776).

1155520960 is an abundant number, since it is smaller than the sum of its proper divisors (1872130592).

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

1155520960 is an equidigital number, since it uses as much as digits as its factorization.

1155520960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2763 (or 2731 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 34.

The square root of 1155520960 is about 33992.9545641446. The cubic root of 1155520960 is about 1049.3634721026.

The spelling of 1155520960 in words is "one billion, one hundred fifty-five million, five hundred twenty thousand, nine hundred sixty".