45220009 has 2 divisors, whose sum is σ = 45220010. Its totient is φ = 45220008.

The previous prime is 45220003. The next prime is 45220013. The reversal of 45220009 is 90002254.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24970009 + 20250000 = 4997^2 + 4500^2 .

It is a cyclic number.

It is not a de Polignac number, because 45220009 - 2¹¹ = 45217961 is a prime.

It is not a weakly prime, because it can be changed into another prime (45220003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22610004 + 22610005.

It is an arithmetic number, because the mean of its divisors is an integer number (22610005).

Almost surely, 2^45220009 is an apocalyptic number.

It is an amenable number.

45220009 is a deficient number, since it is larger than the sum of its proper divisors (1).

45220009 is an equidigital number, since it uses as much as digits as its factorization.

45220009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 45220009 is about 6724.5824405683. The cubic root of 45220009 is about 356.2680539122.

The spelling of 45220009 in words is "forty-five million, two hundred twenty thousand, nine".