5286209 has 4 divisors (see below), whose sum is σ = 5340804. Its totient is φ = 5231616.

The previous prime is 5286191. The next prime is 5286217. The reversal of 5286209 is 9026825.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2146225 + 3139984 = 1465^2 + 1772^2 .

It is a cyclic number.

It is not a de Polignac number, because 5286209 - 2⁸ = 5285953 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5286109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27152 + ... + 27345.

It is an arithmetic number, because the mean of its divisors is an integer number (1335201).

Almost surely, 2^5286209 is an apocalyptic number.

It is an amenable number.

5286209 is a deficient number, since it is larger than the sum of its proper divisors (54595).

5286209 is an equidigital number, since it uses as much as digits as its factorization.

5286209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54594.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 5286209 is about 2299.1757218621. The cubic root of 5286209 is about 174.1999836550.

The spelling of 5286209 in words is "five million, two hundred eighty-six thousand, two hundred nine".