11445845 has 18 divisors (see below), whose sum is σ = 14756262. Its totient is φ = 8521216.

The previous prime is 11445829. The next prime is 11445871. The reversal of 11445845 is 54854411.

It can be written as a sum of positive squares in 9 ways, for example, as 2630884 + 8814961 = 1622^2 + 2969^2 .

It is not a de Polignac number, because 11445845 - 2⁴ = 11445829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 128561 + ... + 128649.

Almost surely, 2^11445845 is an apocalyptic number.

It is an amenable number.

11445845 is a deficient number, since it is larger than the sum of its proper divisors (3310417).

11445845 is an frugal number, since it uses more digits than its factorization.

11445845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 111 counting only the distinct ones).

The product of its digits is 12800, while the sum is 32.

The square root of 11445845 is about 3383.1708499572. The cubic root of 11445845 is about 225.3630025143.

The spelling of 11445845 in words is "eleven million, four hundred forty-five thousand, eight hundred forty-five".