4205445 has 16 divisors (see below), whose sum is σ = 6780480. Its totient is φ = 2225664.

The previous prime is 4205437. The next prime is 4205459. The reversal of 4205445 is 5445024.

It is not a de Polignac number, because 4205445 - 2³ = 4205437 is a prime.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1077 + ... + 3093.

It is an arithmetic number, because the mean of its divisors is an integer number (423780).

Almost surely, 2^4205445 is an apocalyptic number.

It is an amenable number.

4205445 is a deficient number, since it is larger than the sum of its proper divisors (2575035).

4205445 is a wasteful number, since it uses less digits than its factorization.

4205445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2164.

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

The square root of 4205445 is about 2050.7181668869. The cubic root of 4205445 is about 161.4125576603.

The spelling of 4205445 in words is "four million, two hundred five thousand, four hundred forty-five".