45805009 has 2 divisors, whose sum is σ = 45805010. Its totient is φ = 45805008.

The previous prime is 45805003. The next prime is 45805031. The reversal of 45805009 is 90050854.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37699600 + 8105409 = 6140^2 + 2847^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45805009 is a prime.

It is not a weakly prime, because it can be changed into another prime (45805003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22902504 + 22902505.

It is an arithmetic number, because the mean of its divisors is an integer number (22902505).

Almost surely, 2^45805009 is an apocalyptic number.

It is an amenable number.

45805009 is a deficient number, since it is larger than the sum of its proper divisors (1).

45805009 is an equidigital number, since it uses as much as digits as its factorization.

45805009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 45805009 is about 6767.9397899213. The cubic root of 45805009 is about 357.7977931790.

The spelling of 45805009 in words is "forty-five million, eight hundred five thousand, nine".