1143051555 has 16 divisors (see below), whose sum is σ = 1829850624. Its totient is φ = 609304800.

The previous prime is 1143051529. The next prime is 1143051601. The reversal of 1143051555 is 5551503411.

It is not a de Polignac number, because 1143051555 - 2¹¹ = 1143049507 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 10630 + ... + 48980.

It is an arithmetic number, because the mean of its divisors is an integer number (114365664).

Almost surely, 2^1143051555 is an apocalyptic number.

1143051555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1143051555 is a deficient number, since it is larger than the sum of its proper divisors (686799069).

1143051555 is a wasteful number, since it uses less digits than its factorization.

1143051555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40346.

The product of its (nonzero) digits is 7500, while the sum is 30.

The square root of 1143051555 is about 33809.0454612371. The cubic root of 1143051555 is about 1045.5751982435.

Adding to 1143051555 its reverse (5551503411), we get a palindrome (6694554966).

The spelling of 1143051555 in words is "one billion, one hundred forty-three million, fifty-one thousand, five hundred fifty-five".