45564521 has 4 divisors (see below), whose sum is σ = 45578052. Its totient is φ = 45550992.

The previous prime is 45564511. The next prime is 45564557. The reversal of 45564521 is 12546554.

45564521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 31584400 + 13980121 = 5620^2 + 3739^2 .

It is a cyclic number.

It is not a de Polignac number, because 45564521 - 2⁶ = 45564457 is a prime.

It is a super-2 number, since 2×45564521² = 4152251147918882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45564511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2711 + ... + 9923.

It is an arithmetic number, because the mean of its divisors is an integer number (11394513).

Almost surely, 2^45564521 is an apocalyptic number.

It is an amenable number.

45564521 is a deficient number, since it is larger than the sum of its proper divisors (13531).

45564521 is an equidigital number, since it uses as much as digits as its factorization.

45564521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13530.

The product of its digits is 24000, while the sum is 32.

The square root of 45564521 is about 6750.1497020437. The cubic root of 45564521 is about 357.1705174996.

The spelling of 45564521 in words is "forty-five million, five hundred sixty-four thousand, five hundred twenty-one".