5205609 has 6 divisors (see below), whose sum is σ = 7519226. Its totient is φ = 3470400.

The previous prime is 5205593. The next prime is 5205617. The reversal of 5205609 is 9065025.

5205609 is a `hidden beast` number, since 52 + 0 + 5 + 609 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5076009 + 129600 = 2253^2 + 360^2 .

It is not a de Polignac number, because 5205609 - 2⁴ = 5205593 is a prime.

It is a d-powerful number, because it can be written as 5⁶ + 2¹⁴ + 0 + 5⁸ + 6 + 0 + 9⁷ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5205619) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 289192 + ... + 289209.

Almost surely, 2^5205609 is an apocalyptic number.

It is an amenable number.

5205609 is a deficient number, since it is larger than the sum of its proper divisors (2313617).

5205609 is a wasteful number, since it uses less digits than its factorization.

5205609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578407 (or 578404 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 5205609 is about 2281.5803733377. The cubic root of 5205609 is about 173.3100901608.

The spelling of 5205609 in words is "five million, two hundred five thousand, six hundred nine".