45550521 has 12 divisors (see below), whose sum is σ = 66474772. Its totient is φ = 30053376.

The previous prime is 45550517. The next prime is 45550523. The reversal of 45550521 is 12505554.

It can be written as a sum of positive squares in 2 ways, for example, as 6350400 + 39200121 = 2520^2 + 6261^2 .

It is not a de Polignac number, because 45550521 - 2² = 45550517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45550523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25216 + ... + 26961.

Almost surely, 2^45550521 is an apocalyptic number.

It is an amenable number.

45550521 is a deficient number, since it is larger than the sum of its proper divisors (20924251).

45550521 is a wasteful number, since it uses less digits than its factorization.

45550521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52280 (or 52277 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 45550521 is about 6749.1126083360. The cubic root of 45550521 is about 357.1339327522.

The spelling of 45550521 in words is "forty-five million, five hundred fifty thousand, five hundred twenty-one".