5165209 has 4 divisors (see below), whose sum is σ = 5903104. Its totient is φ = 4427316.

The previous prime is 5165201. The next prime is 5165227. The reversal of 5165209 is 9025615.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9025615 = 5 ⋅1805123.

It is a cyclic number.

It is not a de Polignac number, because 5165209 - 2³ = 5165201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5165201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368937 + ... + 368950.

It is an arithmetic number, because the mean of its divisors is an integer number (1475776).

Almost surely, 2^5165209 is an apocalyptic number.

It is an amenable number.

5165209 is a deficient number, since it is larger than the sum of its proper divisors (737895).

5165209 is an equidigital number, since it uses as much as digits as its factorization.

5165209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737894.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 5165209 is about 2272.7096162951. The cubic root of 5165209 is about 172.8605802004.

The spelling of 5165209 in words is "five million, one hundred sixty-five thousand, two hundred nine".