4520545 has 8 divisors (see below), whose sum is σ = 5446440. Its totient is φ = 3601920.

The previous prime is 4520543. The next prime is 4520563. The reversal of 4520545 is 5450254.

It can be written as a sum of positive squares in 4 ways, for example, as 160801 + 4359744 = 401^2 + 2088^2 .

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

It is not a de Polignac number, because 4520545 - 2¹ = 4520543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4520543) 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 7 ways as a sum of consecutive naturals, for example, 336 + ... + 3025.

It is an arithmetic number, because the mean of its divisors is an integer number (680805).

Almost surely, 2^4520545 is an apocalyptic number.

4520545 is the 1345-th heptagonal number.

It is an amenable number.

4520545 is a deficient number, since it is larger than the sum of its proper divisors (925895).

4520545 is a wasteful number, since it uses less digits than its factorization.

4520545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3635.

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 4520545 is about 2126.1573319019. The cubic root of 4520545 is about 165.3472332479.

Adding to 4520545 its reverse (5450254), we get a palindrome (9970799).

The spelling of 4520545 in words is "four million, five hundred twenty thousand, five hundred forty-five".