4505945 has 8 divisors (see below), whose sum is σ = 5691840. Its totient is φ = 3414960.

The previous prime is 4505929. The next prime is 4505947. The reversal of 4505945 is 5495054.

It is a happy number.

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

It is not a de Polignac number, because 4505945 - 2⁴ = 4505929 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (4505947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23621 + ... + 23810.

It is an arithmetic number, because the mean of its divisors is an integer number (711480).

Almost surely, 2^4505945 is an apocalyptic number.

It is an amenable number.

4505945 is a deficient number, since it is larger than the sum of its proper divisors (1185895).

4505945 is a wasteful number, since it uses less digits than its factorization.

4505945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47455.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 4505945 is about 2122.7211310014. The cubic root of 4505945 is about 165.1690339980.

The spelling of 4505945 in words is "four million, five hundred five thousand, nine hundred forty-five".