4055445 has 12 divisors (see below), whose sum is σ = 7029516. Its totient is φ = 2162880.

The previous prime is 4055431. The next prime is 4055461. The reversal of 4055445 is 5445504.

It can be written as a sum of positive squares in 2 ways, for example, as 3122289 + 933156 = 1767^2 + 966^2 .

It is not a de Polignac number, because 4055445 - 2⁹ = 4054933 is a prime.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 45016 + ... + 45105.

It is an arithmetic number, because the mean of its divisors is an integer number (585793).

Almost surely, 2^4055445 is an apocalyptic number.

4055445 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4055445 is a deficient number, since it is larger than the sum of its proper divisors (2974071).

4055445 is a wasteful number, since it uses less digits than its factorization.

4055445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90132 (or 90129 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 4055445 is about 2013.8135464834. The cubic root of 4055445 is about 159.4701876586.

It can be divided in two parts, 405 and 5445, that multiplied together give a square (2205225 = 1485²).

The spelling of 4055445 in words is "four million, fifty-five thousand, four hundred forty-five".