3845545 has 16 divisors (see below), whose sum is σ = 5209920. Its totient is φ = 2699200.

The previous prime is 3845539. The next prime is 3845549. The reversal of 3845545 is 5455483.

It is not a de Polignac number, because 3845545 - 2³ = 3845537 is a prime.

3845545 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3845545.

It is not an unprimeable number, because it can be changed into a prime (3845549) 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 15 ways as a sum of consecutive naturals, for example, 390 + ... + 2800.

It is an arithmetic number, because the mean of its divisors is an integer number (325620).

Almost surely, 2^3845545 is an apocalyptic number.

It is an amenable number.

3845545 is a deficient number, since it is larger than the sum of its proper divisors (1364375).

3845545 is a wasteful number, since it uses less digits than its factorization.

3845545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2456.

The product of its digits is 48000, while the sum is 34.

The square root of 3845545 is about 1961.0061193173. The cubic root of 3845545 is about 156.6700441906.

It can be divided in two parts, 384 and 5545, that added together give a square (5929 = 77²).

The spelling of 3845545 in words is "three million, eight hundred forty-five thousand, five hundred forty-five".