11105145 has 12 divisors (see below), whose sum is σ = 19248996. Its totient is φ = 5922720.

The previous prime is 11105123. The next prime is 11105147. The reversal of 11105145 is 54150111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4769856 + 6335289 = 2184^2 + 2517^2 .

It is not a de Polignac number, because 11105145 - 2⁸ = 11104889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11105147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123346 + ... + 123435.

It is an arithmetic number, because the mean of its divisors is an integer number (1604083).

Almost surely, 2^11105145 is an apocalyptic number.

11105145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11105145 is a deficient number, since it is larger than the sum of its proper divisors (8143851).

11105145 is a wasteful number, since it uses less digits than its factorization.

11105145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246792 (or 246789 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 11105145 is about 3332.4382965030. The cubic root of 11105145 is about 223.1043704299.

Adding to 11105145 its reverse (54150111), we get a palindrome (65255256).

The spelling of 11105145 in words is "eleven million, one hundred five thousand, one hundred forty-five".