45599509 has 2 divisors, whose sum is σ = 45599510. Its totient is φ = 45599508.

The previous prime is 45599497. The next prime is 45599539. The reversal of 45599509 is 90599554.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27562500 + 18037009 = 5250^2 + 4247^2 .

It is a cyclic number.

It is not a de Polignac number, because 45599509 - 2⁷ = 45599381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45599539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22799754 + 22799755.

It is an arithmetic number, because the mean of its divisors is an integer number (22799755).

Almost surely, 2^45599509 is an apocalyptic number.

It is an amenable number.

45599509 is a deficient number, since it is larger than the sum of its proper divisors (1).

45599509 is an equidigital number, since it uses as much as digits as its factorization.

45599509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 364500, while the sum is 46.

The square root of 45599509 is about 6752.7408509434. The cubic root of 45599509 is about 357.2619152546.

The spelling of 45599509 in words is "forty-five million, five hundred ninety-nine thousand, five hundred nine".