4512005 has 4 divisors (see below), whose sum is σ = 5414412. Its totient is φ = 3609600.

The previous prime is 4511989. The next prime is 4512007. The reversal of 4512005 is 5002154.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5002154 = 2 ⋅2501077.

It can be written as a sum of positive squares in 2 ways, for example, as 693889 + 3818116 = 833^2 + 1954^2 .

It is not a de Polignac number, because 4512005 - 2⁴ = 4511989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4512007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 451196 + ... + 451205.

It is an arithmetic number, because the mean of its divisors is an integer number (1353603).

Almost surely, 2^4512005 is an apocalyptic number.

It is an amenable number.

4512005 is a deficient number, since it is larger than the sum of its proper divisors (902407).

4512005 is an equidigital number, since it uses as much as digits as its factorization.

4512005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902406.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 4512005 is about 2124.1480645190. The cubic root of 4512005 is about 165.2430455516.

Adding to 4512005 its reverse (5002154), we get a palindrome (9514159).

It can be divided in two parts, 45 and 12005, that multiplied together give a square (540225 = 735²).

The spelling of 4512005 in words is "four million, five hundred twelve thousand, five".