4528505 has 4 divisors (see below), whose sum is σ = 5434212. Its totient is φ = 3622800.

The previous prime is 4528487. The next prime is 4528507. The reversal of 4528505 is 5058254.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1607824 + 2920681 = 1268^2 + 1709^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4528505 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4528507) 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 3 ways as a sum of consecutive naturals, for example, 452846 + ... + 452855.

It is an arithmetic number, because the mean of its divisors is an integer number (1358553).

Almost surely, 2^4528505 is an apocalyptic number.

It is an amenable number.

4528505 is a deficient number, since it is larger than the sum of its proper divisors (905707).

4528505 is an equidigital number, since it uses as much as digits as its factorization.

4528505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905706.

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 4528505 is about 2128.0284302612. The cubic root of 4528505 is about 165.4442268781. Note that the first 3 decimals are identical.

The spelling of 4528505 in words is "four million, five hundred twenty-eight thousand, five hundred five".