4522561 has 6 divisors (see below), whose sum is σ = 4804550. Its totient is φ = 4256256.

The previous prime is 4522549. The next prime is 4522577. The reversal of 4522561 is 1652254.

It can be written as a sum of positive squares in 3 ways, for example, as 1062961 + 3459600 = 1031^2 + 1860^2 .

It is not a de Polignac number, because 4522561 - 2¹³ = 4514369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4522501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7536 + ... + 8113.

Almost surely, 2^4522561 is an apocalyptic number.

It is an amenable number.

4522561 is a deficient number, since it is larger than the sum of its proper divisors (281989).

4522561 is a wasteful number, since it uses less digits than its factorization.

4522561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15683 (or 15666 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 4522561 is about 2126.6313737928. The cubic root of 4522561 is about 165.3718092288.

The spelling of 4522561 in words is "four million, five hundred twenty-two thousand, five hundred sixty-one".