1143550520 has 32 divisors (see below), whose sum is σ = 2940559200. Its totient is φ = 392074368.

The previous prime is 1143550519. The next prime is 1143550523. The reversal of 1143550520 is 250553411.

It is a self number, because there is not a number n which added to its sum of digits gives 1143550520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143550523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2041775 + ... + 2042334.

It is an arithmetic number, because the mean of its divisors is an integer number (91892475).

Almost surely, 2^1143550520 is an apocalyptic number.

1143550520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143550520 is an abundant number, since it is smaller than the sum of its proper divisors (1797008680).

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

1143550520 is a wasteful number, since it uses less digits than its factorization.

1143550520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4084127 (or 4084123 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1143550520 is about 33816.4238203864. The cubic root of 1143550520 is about 1045.7273143148.

The spelling of 1143550520 in words is "one billion, one hundred forty-three million, five hundred fifty thousand, five hundred twenty".