545828909 has 2 divisors, whose sum is σ = 545828910. Its totient is φ = 545828908.

The previous prime is 545828887. The next prime is 545828929. The reversal of 545828909 is 909828545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 520296100 + 25532809 = 22810^2 + 5053^2 .

It is a cyclic number.

It is not a de Polignac number, because 545828909 - 2⁸ = 545828653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545828929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272914454 + 272914455.

It is an arithmetic number, because the mean of its divisors is an integer number (272914455).

Almost surely, 2^545828909 is an apocalyptic number.

It is an amenable number.

545828909 is a deficient number, since it is larger than the sum of its proper divisors (1).

545828909 is an equidigital number, since it uses as much as digits as its factorization.

545828909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1036800, while the sum is 50.

The square root of 545828909 is about 23362.9815948222. The cubic root of 545828909 is about 817.2448225499.

The spelling of 545828909 in words is "five hundred forty-five million, eight hundred twenty-eight thousand, nine hundred nine".