2201445 has 32 divisors (see below), whose sum is σ = 4089600. Its totient is φ = 1121472.

The previous prime is 2201443. The next prime is 2201489. The reversal of 2201445 is 5441022.

2201445 is a `hidden beast` number, since 220 + 1 + 445 = 666.

2201445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2201445 - 2¹ = 2201443 is a prime.

It is a Curzon number.

2201445 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2751 + ... + 3459.

It is an arithmetic number, because the mean of its divisors is an integer number (127800).

2^2201445 is an apocalyptic number.

It is an amenable number.

2201445 is a deficient number, since it is larger than the sum of its proper divisors (1888155).

2201445 is a wasteful number, since it uses less digits than its factorization.

2201445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746 (or 740 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 2201445 is about 1483.7267268604. The cubic root of 2201445 is about 130.0876135234.

Adding to 2201445 its reverse (5441022), we get a palindrome (7642467).

The spelling of 2201445 in words is "two million, two hundred one thousand, four hundred forty-five".