4045505 has 4 divisors (see below), whose sum is σ = 4854612. Its totient is φ = 3236400.

The previous prime is 4045501. The next prime is 4045523. The reversal of 4045505 is 5055404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3125824 + 919681 = 1768^2 + 959^2 .

It is not a de Polignac number, because 4045505 - 2² = 4045501 is a prime.

It is a super-2 number, since 2×4045505² = 32732221410050, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4045501) 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 3 ways as a sum of consecutive naturals, for example, 404546 + ... + 404555.

It is an arithmetic number, because the mean of its divisors is an integer number (1213653).

Almost surely, 2^4045505 is an apocalyptic number.

It is an amenable number.

4045505 is a deficient number, since it is larger than the sum of its proper divisors (809107).

4045505 is an equidigital number, since it uses as much as digits as its factorization.

4045505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809106.

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 4045505 is about 2011.3440779737. The cubic root of 4045505 is about 159.3397925561.

The spelling of 4045505 in words is "four million, forty-five thousand, five hundred five".