1155210543 has 12 divisors (see below), whose sum is σ = 1671577440. Its totient is φ = 768783456.

The previous prime is 1155210533. The next prime is 1155210649. The reversal of 1155210543 is 3450125511.

1155210543 is a `hidden beast` number, since 1 + 1 + 552 + 105 + 4 + 3 = 666.

It is not a de Polignac number, because 1155210543 - 2⁶ = 1155210479 is a prime.

It is a super-2 number, since 2×1155210543² = 2669022797316709698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155210533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107671 + ... + 117912.

It is an arithmetic number, because the mean of its divisors is an integer number (139298120).

Almost surely, 2^1155210543 is an apocalyptic number.

1155210543 is a deficient number, since it is larger than the sum of its proper divisors (516366897).

1155210543 is a wasteful number, since it uses less digits than its factorization.

1155210543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226158 (or 226155 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 1155210543 is about 33988.3883554369. The cubic root of 1155210543 is about 1049.2694973370.

The spelling of 1155210543 in words is "one billion, one hundred fifty-five million, two hundred ten thousand, five hundred forty-three".