1155022543 has 2 divisors, whose sum is σ = 1155022544. Its totient is φ = 1155022542.

The previous prime is 1155022541. The next prime is 1155022549. The reversal of 1155022543 is 3452205511.

It is a weak prime.

It is an emirp because it is prime and its reverse (3452205511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1155022543 - 2¹ = 1155022541 is a prime.

Together with 1155022541, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1155022541) 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 as a sum of consecutive naturals, namely, 577511271 + 577511272.

It is an arithmetic number, because the mean of its divisors is an integer number (577511272).

Almost surely, 2^1155022543 is an apocalyptic number.

1155022543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155022543 is an equidigital number, since it uses as much as digits as its factorization.

1155022543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 1155022543 is about 33985.6225925023. The cubic root of 1155022543 is about 1049.2125745626.

The spelling of 1155022543 in words is "one billion, one hundred fifty-five million, twenty-two thousand, five hundred forty-three".