4045538 has 12 divisors (see below), whose sum is σ = 7059222. Its totient is φ = 1733760.

The previous prime is 4045523. The next prime is 4045549. The reversal of 4045538 is 8355404.

It can be written as a sum of positive squares in only one way, i.e., 3545689 + 499849 = 1883^2 + 707^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4045538.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20543 + ... + 20738.

Almost surely, 2^4045538 is an apocalyptic number.

4045538 is a deficient number, since it is larger than the sum of its proper divisors (3013684).

4045538 is a wasteful number, since it uses less digits than its factorization.

4045538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41297 (or 41290 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 4045538 is about 2011.3522814266. The cubic root of 4045538 is about 159.3402258105.

The spelling of 4045538 in words is "four million, forty-five thousand, five hundred thirty-eight".