45522009 has 27 divisors (see below), whose sum is σ = 71615037. Its totient is φ = 27851616.

The previous prime is 45521999. The next prime is 45522017. The reversal of 45522009 is 90022554.

The square root of 45522009 is 6747.

It is a perfect power (a square), and thus also a powerful number.

45522009 is a `hidden beast` number, since 455 + 2 + 200 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 363609 + 45158400 = 603^2 + 6720^2 .

It is not a de Polignac number, because 45522009 - 2⁵ = 45521977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45522019) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 263047 + ... + 263219.

Almost surely, 2^45522009 is an apocalyptic number.

45522009 is the 6747-th square number.

45522009 is the 3374-th centered octagonal number.

It is an amenable number.

45522009 is a deficient number, since it is larger than the sum of its proper divisors (26093028).

45522009 is a wasteful number, since it uses less digits than its factorization.

45522009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The cubic root of 45522009 is about 357.0594021155.

Multiplying 45522009 by its product of nonzero digits (3600), we get a square (163879232400 = 404820²).

It can be divided in two parts, 4552 and 2009, that added together give a 8-th power (6561 = 3⁸).

The spelling of 45522009 in words is "forty-five million, five hundred twenty-two thousand, nine".