4512405 has 32 divisors (see below), whose sum is σ = 7741440. Its totient is φ = 2237760.

The previous prime is 4512397. The next prime is 4512407. The reversal of 4512405 is 5042154.

It is not a de Polignac number, because 4512405 - 2³ = 4512397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4512407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20124 + ... + 20346.

It is an arithmetic number, because the mean of its divisors is an integer number (241920).

Almost surely, 2^4512405 is an apocalyptic number.

It is an amenable number.

4512405 is a deficient number, since it is larger than the sum of its proper divisors (3229035).

4512405 is a wasteful number, since it uses less digits than its factorization.

4512405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 4512405 is about 2124.2422178273. The cubic root of 4512405 is about 165.2479284706.

Adding to 4512405 its reverse (5042154), we get a palindrome (9554559).

The spelling of 4512405 in words is "four million, five hundred twelve thousand, four hundred five".