45090917 has 2 divisors, whose sum is σ = 45090918. Its totient is φ = 45090916.

The previous prime is 45090889. The next prime is 45090931. The reversal of 45090917 is 71909054.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44102881 + 988036 = 6641^2 + 994^2 .

It is a cyclic number.

It is not a de Polignac number, because 45090917 - 2¹⁰ = 45089893 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45090217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22545458 + 22545459.

It is an arithmetic number, because the mean of its divisors is an integer number (22545459).

Almost surely, 2^45090917 is an apocalyptic number.

It is an amenable number.

45090917 is a deficient number, since it is larger than the sum of its proper divisors (1).

45090917 is an equidigital number, since it uses as much as digits as its factorization.

45090917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 45090917 is about 6714.9770662304. The cubic root of 45090917 is about 355.9287115809.

The spelling of 45090917 in words is "forty-five million, ninety thousand, nine hundred seventeen".