1105520345 has 4 divisors (see below), whose sum is σ = 1326624420. Its totient is φ = 884416272.

The previous prime is 1105520341. The next prime is 1105520359. The reversal of 1105520345 is 5430255011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 225330121 + 880190224 = 15011^2 + 29668^2 .

It is a cyclic number.

It is not a de Polignac number, because 1105520345 - 2² = 1105520341 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1105520341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110552030 + ... + 110552039.

It is an arithmetic number, because the mean of its divisors is an integer number (331656105).

Almost surely, 2^1105520345 is an apocalyptic number.

It is an amenable number.

1105520345 is a deficient number, since it is larger than the sum of its proper divisors (221104075).

1105520345 is an equidigital number, since it uses as much as digits as its factorization.

1105520345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221104074.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1105520345 is about 33249.3660841827. The cubic root of 1105520345 is about 1034.0040658079.

Adding to 1105520345 its reverse (5430255011), we get a palindrome (6535775356).

The spelling of 1105520345 in words is "one billion, one hundred five million, five hundred twenty thousand, three hundred forty-five".