1155554260 has 144 divisors (see below), whose sum is σ = 3016440000. Its totient is φ = 369460224.

The previous prime is 1155554207. The next prime is 1155554269. The reversal of 1155554260 is 624555511.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155554269) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2315491 + ... + 2315989.

It is an arithmetic number, because the mean of its divisors is an integer number (20947500).

Almost surely, 2^1155554260 is an apocalyptic number.

1155554260 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 1155554260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1508220000).

1155554260 is an abundant number, since it is smaller than the sum of its proper divisors (1860885740).

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

1155554260 is a wasteful number, since it uses less digits than its factorization.

1155554260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 34.

The square root of 1155554260 is about 33993.4443679954. Note that the first 3 decimals coincide. The cubic root of 1155554260 is about 1049.3735522509.

The spelling of 1155554260 in words is "one billion, one hundred fifty-five million, five hundred fifty-four thousand, two hundred sixty".