5186209 has 12 divisors (see below), whose sum is σ = 6149844. Its totient is φ = 4359264.

The previous prime is 5186197. The next prime is 5186219. The reversal of 5186209 is 9026815.

It can be written as a sum of positive squares in 2 ways, for example, as 1587600 + 3598609 = 1260^2 + 1897^2 .

It is not a de Polignac number, because 5186209 - 2⁵ = 5186177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5186219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1599 + ... + 3595.

It is an arithmetic number, because the mean of its divisors is an integer number (512487).

Almost surely, 2^5186209 is an apocalyptic number.

It is an amenable number.

5186209 is a deficient number, since it is larger than the sum of its proper divisors (963635).

5186209 is a wasteful number, since it uses less digits than its factorization.

5186209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064 (or 2057 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 5186209 is about 2277.3249658316. The cubic root of 5186209 is about 173.0945277338.

Subtracting 5186209 from its reverse (9026815), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 5186209 in words is "five million, one hundred eighty-six thousand, two hundred nine".