545080509 has 10 divisors (see below), whose sum is σ = 814256190. Its totient is φ = 363386952.

The previous prime is 545080489. The next prime is 545080517. The reversal of 545080509 is 905080545.

It is a happy number.

545080509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 302655609 + 242424900 = 17397^2 + 15570^2 .

It is not a de Polignac number, because 545080509 - 2¹³ = 545072317 is a prime.

It is a super-2 number, since 2×545080509² = 594225522583398162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545080579) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3364614 + ... + 3364775.

It is an arithmetic number, because the mean of its divisors is an integer number (81425619).

Almost surely, 2^545080509 is an apocalyptic number.

It is an amenable number.

545080509 is a deficient number, since it is larger than the sum of its proper divisors (269175681).

545080509 is an equidigital number, since it uses as much as digits as its factorization.

545080509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6729401 (or 6729392 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 545080509 is about 23346.9593095118. The cubic root of 545080509 is about 816.8711366037.

Adding to 545080509 its sum of digits (36), we get a palindrome (545080545).

The spelling of 545080509 in words is "five hundred forty-five million, eighty thousand, five hundred nine".