2045445 has 16 divisors (see below), whose sum is σ = 3445440. Its totient is φ = 1033344.

The previous prime is 2045441. The next prime is 2045503. The reversal of 2045445 is 5445402.

2045445 = 104² + 105² + ... + 193².

It is not a de Polignac number, because 2045445 - 2² = 2045441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045441) 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 15 ways as a sum of consecutive naturals, for example, 3304 + ... + 3873.

It is an arithmetic number, because the mean of its divisors is an integer number (215340).

2^2045445 is an apocalyptic number.

It is an amenable number.

2045445 is a deficient number, since it is larger than the sum of its proper divisors (1399995).

2045445 is a wasteful number, since it uses less digits than its factorization.

2045445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7204.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 2045445 is about 1430.1905467454. The cubic root of 2045445 is about 126.9392521590.

The spelling of 2045445 in words is "two million, forty-five thousand, four hundred forty-five".