1143035550 has 96 divisors (see below), whose sum is σ = 3188888160. Its totient is φ = 304780320.

The previous prime is 1143035549. The next prime is 1143035563. The reversal of 1143035550 is 555303411.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 104124 + ... + 114576.

It is an arithmetic number, because the mean of its divisors is an integer number (33217585).

Almost surely, 2^1143035550 is an apocalyptic number.

1143035550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143035550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1594444080).

1143035550 is an abundant number, since it is smaller than the sum of its proper divisors (2045852610).

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

1143035550 is an equidigital number, since it uses as much as digits as its factorization.

1143035550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10486 (or 10463 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 1143035550 is about 33808.8087633977. The cubic root of 1143035550 is about 1045.5703181751.

Adding to 1143035550 its reverse (555303411), we get a palindrome (1698338961).

The spelling of 1143035550 in words is "one billion, one hundred forty-three million, thirty-five thousand, five hundred fifty".