1155354543 has 16 divisors (see below), whose sum is σ = 1956156160. Its totient is φ = 660202488.

The previous prime is 1155354523. The next prime is 1155354553. The reversal of 1155354543 is 3454535511.

1155354543 is a `hidden beast` number, since 1 + 1 + 553 + 54 + 54 + 3 = 666.

It is not a de Polignac number, because 1155354543 - 2¹⁸ = 1155092399 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1155354498 and 1155354507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155354523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3056305 + ... + 3056682.

It is an arithmetic number, because the mean of its divisors is an integer number (122259760).

Almost surely, 2^1155354543 is an apocalyptic number.

1155354543 is a deficient number, since it is larger than the sum of its proper divisors (800801617).

1155354543 is an equidigital number, since it uses as much as digits as its factorization.

1155354543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6113003 (or 6112997 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The square root of 1155354543 is about 33990.5066599485. The cubic root of 1155354543 is about 1049.3130935833.

The spelling of 1155354543 in words is "one billion, one hundred fifty-five million, three hundred fifty-four thousand, five hundred forty-three".