5120209 has 4 divisors (see below), whose sum is σ = 5128816. Its totient is φ = 5111604.

The previous prime is 5120201. The next prime is 5120221. The reversal of 5120209 is 9020215.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5120209 - 2³ = 5120201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5120201) 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, 3339 + ... + 4624.

It is an arithmetic number, because the mean of its divisors is an integer number (1282204).

Almost surely, 2^5120209 is an apocalyptic number.

It is an amenable number.

5120209 is a deficient number, since it is larger than the sum of its proper divisors (8607).

5120209 is an equidigital number, since it uses as much as digits as its factorization.

5120209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8606.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 5120209 is about 2262.7878822373. The cubic root of 5120209 is about 172.3571203626.

It can be divided in two parts, 5120 and 209, that added together give a square (5329 = 73²).

The spelling of 5120209 in words is "five million, one hundred twenty thousand, two hundred nine".