1155275760 has 120 divisors (see below), whose sum is σ = 3701347920. Its totient is φ = 298076160.

The previous prime is 1155275741. The next prime is 1155275857. The reversal of 1155275760 is 675725511.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 228136 + ... + 233144.

It is an arithmetic number, because the mean of its divisors is an integer number (30844566).

Almost surely, 2^1155275760 is an apocalyptic number.

1155275760 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 1155275760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1850673960).

1155275760 is an abundant number, since it is smaller than the sum of its proper divisors (2546072160).

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

1155275760 is a wasteful number, since it uses less digits than its factorization.

1155275760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5087 (or 5050 counting only the distinct ones).

The product of its (nonzero) digits is 73500, while the sum is 39.

The square root of 1155275760 is about 33989.3477430797. The cubic root of 1155275760 is about 1049.2892423441.

The spelling of 1155275760 in words is "one billion, one hundred fifty-five million, two hundred seventy-five thousand, seven hundred sixty".