4540505 has 4 divisors (see below), whose sum is σ = 5448612. Its totient is φ = 3632400.

The previous prime is 4540493. The next prime is 4540507. The reversal of 4540505 is 5050454.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5050454 = 2 ⋅2525227.

It can be written as a sum of positive squares in 2 ways, for example, as 2647129 + 1893376 = 1627^2 + 1376^2 .

It is not a de Polignac number, because 4540505 - 2¹⁰ = 4539481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4540507) 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, 454046 + ... + 454055.

It is an arithmetic number, because the mean of its divisors is an integer number (1362153).

Almost surely, 2^4540505 is an apocalyptic number.

It is an amenable number.

4540505 is a deficient number, since it is larger than the sum of its proper divisors (908107).

4540505 is an equidigital number, since it uses as much as digits as its factorization.

4540505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908106.

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

The square root of 4540505 is about 2130.8460760928. The cubic root of 4540505 is about 165.5902338325.

Adding to 4540505 its reverse (5050454), we get a palindrome (9590959).

The spelling of 4540505 in words is "four million, five hundred forty thousand, five hundred five".