545362609 has 15 divisors (see below), whose sum is σ = 603019515. Its totient is φ = 493215360.

The previous prime is 545362577. The next prime is 545362619. The reversal of 545362609 is 906263545.

The square root of 545362609 is 23353.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 132135025 + 413227584 = 11495^2 + 20328^2 .

It is not a de Polignac number, because 545362609 - 2⁵ = 545362577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545362619) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 2825617 + ... + 2825809.

It is an arithmetic number, because the mean of its divisors is an integer number (40201301).

Almost surely, 2^545362609 is an apocalyptic number.

545362609 is the 23353-rd square number.

545362609 is the 11677-th centered octagonal number.

It is an amenable number.

545362609 is a deficient number, since it is larger than the sum of its proper divisors (57656906).

545362609 is an frugal number, since it uses more digits than its factorization.

545362609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 40.

The cubic root of 545362609 is about 817.0120329799.

The spelling of 545362609 in words is "five hundred forty-five million, three hundred sixty-two thousand, six hundred nine".