5209605 has 12 divisors (see below), whose sum is σ = 9030060. Its totient is φ = 2778432.

The previous prime is 5209601. The next prime is 5209619. The reversal of 5209605 is 5069025.

5209605 is a `hidden beast` number, since 52 + 0 + 9 + 605 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4004001 + 1205604 = 2001^2 + 1098^2 .

It is not a de Polignac number, because 5209605 - 2² = 5209601 is a prime.

5209605 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5209601) 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 in 11 ways as a sum of consecutive naturals, for example, 57840 + ... + 57929.

It is an arithmetic number, because the mean of its divisors is an integer number (752505).

Almost surely, 2^5209605 is an apocalyptic number.

It is an amenable number.

5209605 is a deficient number, since it is larger than the sum of its proper divisors (3820455).

5209605 is a wasteful number, since it uses less digits than its factorization.

5209605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115780 (or 115777 counting only the distinct ones).

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

The square root of 5209605 is about 2282.4559141416. The cubic root of 5209605 is about 173.3544250304.

The spelling of 5209605 in words is "five million, two hundred nine thousand, six hundred five".