45028609 has 2 divisors, whose sum is σ = 45028610. Its totient is φ = 45028608.

The previous prime is 45028603. The next prime is 45028639. The reversal of 45028609 is 90682054.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30283009 + 14745600 = 5503^2 + 3840^2 .

It is a cyclic number.

It is not a de Polignac number, because 45028609 - 2³ = 45028601 is a prime.

It is not a weakly prime, because it can be changed into another prime (45028601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22514304 + 22514305.

It is an arithmetic number, because the mean of its divisors is an integer number (22514305).

Almost surely, 2^45028609 is an apocalyptic number.

It is an amenable number.

45028609 is a deficient number, since it is larger than the sum of its proper divisors (1).

45028609 is an equidigital number, since it uses as much as digits as its factorization.

45028609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 45028609 is about 6710.3359826465. The cubic root of 45028609 is about 355.7646916368.

The spelling of 45028609 in words is "forty-five million, twenty-eight thousand, six hundred nine".