545033509 has 2 divisors, whose sum is σ = 545033510. Its totient is φ = 545033508.

The previous prime is 545033483. The next prime is 545033519. The reversal of 545033509 is 905330545.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 280060225 + 264973284 = 16735^2 + 16278^2 .

It is a cyclic number.

It is not a de Polignac number, because 545033509 - 2⁷ = 545033381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545033519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272516754 + 272516755.

It is an arithmetic number, because the mean of its divisors is an integer number (272516755).

Almost surely, 2^545033509 is an apocalyptic number.

It is an amenable number.

545033509 is a deficient number, since it is larger than the sum of its proper divisors (1).

545033509 is an equidigital number, since it uses as much as digits as its factorization.

545033509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40500, while the sum is 34.

The square root of 545033509 is about 23345.9527327543. The cubic root of 545033509 is about 816.8476574746.

The spelling of 545033509 in words is "five hundred forty-five million, thirty-three thousand, five hundred nine".