2011445 has 8 divisors (see below), whose sum is σ = 2423736. Its totient is φ = 1602496.

The previous prime is 2011441. The next prime is 2011483. The reversal of 2011445 is 5441102.

It can be written as a sum of positive squares in 4 ways, for example, as 1304164 + 707281 = 1142^2 + 841^2 .

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 2011445 - 2² = 2011441 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 779 + ... + 2151.

It is an arithmetic number, because the mean of its divisors is an integer number (302967).

2^2011445 is an apocalyptic number.

It is an amenable number.

2011445 is a deficient number, since it is larger than the sum of its proper divisors (412291).

2011445 is a wasteful number, since it uses less digits than its factorization.

2011445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 2011445 is about 1418.2542085254. The cubic root of 2011445 is about 126.2319779523.

Adding to 2011445 its reverse (5441102), we get a palindrome (7452547).

The spelling of 2011445 in words is "two million, eleven thousand, four hundred forty-five".