1123105547 has 2 divisors, whose sum is σ = 1123105548. Its totient is φ = 1123105546.

The previous prime is 1123105513. The next prime is 1123105559. The reversal of 1123105547 is 7455013211.

It is a strong prime.

It is an emirp because it is prime and its reverse (7455013211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1123105547 - 2⁶ = 1123105483 is a prime.

It is a super-2 number, since 2×1123105547² = 2522732139404338418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1123105597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561552773 + 561552774.

It is an arithmetic number, because the mean of its divisors is an integer number (561552774).

Almost surely, 2^1123105547 is an apocalyptic number.

1123105547 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123105547 is an equidigital number, since it uses as much as digits as its factorization.

1123105547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 1123105547 is about 33512.7669254569. The cubic root of 1123105547 is about 1039.4577878137.

Adding to 1123105547 its reverse (7455013211), we get a palindrome (8578118758).

The spelling of 1123105547 in words is "one billion, one hundred twenty-three million, one hundred five thousand, five hundred forty-seven".