45521605 has 4 divisors (see below), whose sum is σ = 54625932. Its totient is φ = 36417280.

The previous prime is 45521591. The next prime is 45521629. The reversal of 45521605 is 50612554.

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 7193124 + 38328481 = 2682^2 + 6191^2 .

It is not a de Polignac number, because 45521605 - 2⁵ = 45521573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4552156 + ... + 4552165.

It is an arithmetic number, because the mean of its divisors is an integer number (13656483).

Almost surely, 2^45521605 is an apocalyptic number.

It is an amenable number.

45521605 is a deficient number, since it is larger than the sum of its proper divisors (9104327).

45521605 is an equidigital number, since it uses as much as digits as its factorization.

45521605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9104326.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 45521605 is about 6746.9700607013. The cubic root of 45521605 is about 357.0583458321.

The spelling of 45521605 in words is "forty-five million, five hundred twenty-one thousand, six hundred five".