2012445 has 20 divisors (see below), whose sum is σ = 3608220. Its totient is φ = 1073088.

The previous prime is 2012429. The next prime is 2012447. The reversal of 2012445 is 5442102.

It can be written as a sum of positive squares in 2 ways, for example, as 558009 + 1454436 = 747^2 + 1206^2 .

It is not a de Polignac number, because 2012445 - 2⁴ = 2012429 is a prime.

It is an Ulam number.

2012445 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012447) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 2080 + ... + 2889.

It is an arithmetic number, because the mean of its divisors is an integer number (180411).

2^2012445 is an apocalyptic number.

It is an amenable number.

2012445 is a deficient number, since it is larger than the sum of its proper divisors (1595775).

2012445 is an equidigital number, since it uses as much as digits as its factorization.

2012445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4986 (or 4977 counting only the distinct ones).

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

The square root of 2012445 is about 1418.6067108258. The cubic root of 2012445 is about 126.2528934409.

Adding to 2012445 its reverse (5442102), we get a palindrome (7454547).

The spelling of 2012445 in words is "two million, twelve thousand, four hundred forty-five".