1105511045 has 8 divisors (see below), whose sum is σ = 1326799896. Its totient is φ = 884284416.

The previous prime is 1105511039. The next prime is 1105511081. The reversal of 1105511045 is 5401155011.

It can be written as a sum of positive squares in 4 ways, for example, as 18028516 + 1087482529 = 4246^2 + 32977^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1105511045 - 2²⁴ = 1088733829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1105511045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44909 + ... + 65021.

It is an arithmetic number, because the mean of its divisors is an integer number (165849987).

Almost surely, 2^1105511045 is an apocalyptic number.

It is an amenable number.

1105511045 is a deficient number, since it is larger than the sum of its proper divisors (221288851).

1105511045 is a wasteful number, since it uses less digits than its factorization.

1105511045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31111.

The product of its (nonzero) digits is 500, while the sum is 23.

The square root of 1105511045 is about 33249.2262315982. The cubic root of 1105511045 is about 1034.0011663392.

Adding to 1105511045 its reverse (5401155011), we get a palindrome (6506666056).

It can be divided in two parts, 110 and 5511045, that added together give a palindrome (5511155).

The spelling of 1105511045 in words is "one billion, one hundred five million, five hundred eleven thousand, forty-five".