45200509 has 2 divisors, whose sum is σ = 45200510. Its totient is φ = 45200508.

The previous prime is 45200489. The next prime is 45200521. The reversal of 45200509 is 90500254.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44156025 + 1044484 = 6645^2 + 1022^2 .

It is a cyclic number.

It is not a de Polignac number, because 45200509 - 2¹⁵ = 45167741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45200579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22600254 + 22600255.

It is an arithmetic number, because the mean of its divisors is an integer number (22600255).

Almost surely, 2^45200509 is an apocalyptic number.

It is an amenable number.

45200509 is a deficient number, since it is larger than the sum of its proper divisors (1).

45200509 is an equidigital number, since it uses as much as digits as its factorization.

45200509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 45200509 is about 6723.1323800740. The cubic root of 45200509 is about 356.2168359812.

The spelling of 45200509 in words is "forty-five million, two hundred thousand, five hundred nine".