1155107520 has 448 divisors, whose sum is σ = 4740249600. Its totient is φ = 259338240.

The previous prime is 1155107501. The next prime is 1155107521. The reversal of 1155107520 is 257015511.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155107521) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4293946 + ... + 4294214.

Almost surely, 2^1155107520 is an apocalyptic number.

1155107520 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 1155107520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2370124800).

1155107520 is an abundant number, since it is smaller than the sum of its proper divisors (3585142080).

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

1155107520 is a wasteful number, since it uses less digits than its factorization.

1155107520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 27.

The square root of 1155107520 is about 33986.8727599348. The cubic root of 1155107520 is about 1049.2383047244.

The spelling of 1155107520 in words is "one billion, one hundred fifty-five million, one hundred seven thousand, five hundred twenty".