2057445 has 24 divisors (see below), whose sum is σ = 3841656. Its totient is φ = 1012608.

The previous prime is 2057441. The next prime is 2057477. The reversal of 2057445 is 5447502.

It can be written as a sum of positive squares in 4 ways, for example, as 338724 + 1718721 = 582^2 + 1311^2 .

It is not a de Polignac number, because 2057445 - 2² = 2057441 is a prime.

2057445 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2057441) 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 23 ways as a sum of consecutive naturals, for example, 1174 + ... + 2343.

It is an arithmetic number, because the mean of its divisors is an integer number (160069).

2^2057445 is an apocalyptic number.

It is an amenable number.

2057445 is a deficient number, since it is larger than the sum of its proper divisors (1784211).

2057445 is a wasteful number, since it uses less digits than its factorization.

2057445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3541 (or 3538 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 2057445 is about 1434.3796568552. The cubic root of 2057445 is about 127.1870062080.

The spelling of 2057445 in words is "two million, fifty-seven thousand, four hundred forty-five".