4505405 has 8 divisors (see below), whose sum is σ = 5427672. Its totient is φ = 3590208.

The previous prime is 4505393. The next prime is 4505419. The reversal of 4505405 is 5045054.

It can be written as a sum of positive squares in 4 ways, for example, as 1038361 + 3467044 = 1019^2 + 1862^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4505405 - 2¹⁴ = 4489021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242 + ... + 3011.

It is an arithmetic number, because the mean of its divisors is an integer number (678459).

Almost surely, 2^4505405 is an apocalyptic number.

It is an amenable number.

4505405 is a deficient number, since it is larger than the sum of its proper divisors (922267).

4505405 is a wasteful number, since it uses less digits than its factorization.

4505405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3535.

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

The square root of 4505405 is about 2122.5939319616. The cubic root of 4505405 is about 165.1624356898.

The spelling of 4505405 in words is "four million, five hundred five thousand, four hundred five".