11545145 has 4 divisors (see below), whose sum is σ = 13854180. Its totient is φ = 9236112.

The previous prime is 11545133. The next prime is 11545153. The reversal of 11545145 is 54154511.

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 7513081 + 4032064 = 2741^2 + 2008^2 .

It is a cyclic number.

It is not a de Polignac number, because 11545145 - 2¹⁴ = 11528761 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1154510 + ... + 1154519.

It is an arithmetic number, because the mean of its divisors is an integer number (3463545).

Almost surely, 2^11545145 is an apocalyptic number.

It is an amenable number.

11545145 is a deficient number, since it is larger than the sum of its proper divisors (2309035).

11545145 is an equidigital number, since it uses as much as digits as its factorization.

11545145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2309034.

The product of its digits is 2000, while the sum is 26.

The square root of 11545145 is about 3397.8147389168. The cubic root of 11545145 is about 226.0128494013.

Adding to 11545145 its reverse (54154511), we get a palindrome (65699656).

The spelling of 11545145 in words is "eleven million, five hundred forty-five thousand, one hundred forty-five".