45009817 has 2 divisors, whose sum is σ = 45009818. Its totient is φ = 45009816.

The previous prime is 45009793. The next prime is 45009823. The reversal of 45009817 is 71890054.

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., 39388176 + 5621641 = 6276^2 + 2371^2 .

It is a cyclic number.

It is not a de Polignac number, because 45009817 - 2²³ = 36621209 is a prime.

It is not a weakly prime, because it can be changed into another prime (45009847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22504908 + 22504909.

It is an arithmetic number, because the mean of its divisors is an integer number (22504909).

Almost surely, 2^45009817 is an apocalyptic number.

It is an amenable number.

45009817 is a deficient number, since it is larger than the sum of its proper divisors (1).

45009817 is an equidigital number, since it uses as much as digits as its factorization.

45009817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 45009817 is about 6708.9356085746. The cubic root of 45009817 is about 355.7151937695.

The spelling of 45009817 in words is "forty-five million, nine thousand, eight hundred seventeen".