45563509 has 2 divisors, whose sum is σ = 45563510. Its totient is φ = 45563508.

The previous prime is 45563491. The next prime is 45563533. The reversal of 45563509 is 90536554.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45185284 + 378225 = 6722^2 + 615^2 .

It is a cyclic number.

It is not a de Polignac number, because 45563509 - 2⁷ = 45563381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45563549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22781754 + 22781755.

It is an arithmetic number, because the mean of its divisors is an integer number (22781755).

Almost surely, 2^45563509 is an apocalyptic number.

It is an amenable number.

45563509 is a deficient number, since it is larger than the sum of its proper divisors (1).

45563509 is an equidigital number, since it uses as much as digits as its factorization.

45563509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81000, while the sum is 37.

The square root of 45563509 is about 6750.0747403270. The cubic root of 45563509 is about 357.1678731963.

The spelling of 45563509 in words is "forty-five million, five hundred sixty-three thousand, five hundred nine".