5351209 has 4 divisors (see below), whose sum is σ = 5666004. Its totient is φ = 5036416.

The previous prime is 5351201. The next prime is 5351237. The reversal of 5351209 is 9021535.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9021535 = 5 ⋅1804307.

It can be written as a sum of positive squares in 2 ways, for example, as 3240000 + 2111209 = 1800^2 + 1453^2 .

It is a cyclic number.

It is not a de Polignac number, because 5351209 - 2³ = 5351201 is a prime.

It is a Duffinian number.

5351209 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5351201) 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, 157372 + ... + 157405.

It is an arithmetic number, because the mean of its divisors is an integer number (1416501).

Almost surely, 2^5351209 is an apocalyptic number.

It is an amenable number.

5351209 is a deficient number, since it is larger than the sum of its proper divisors (314795).

5351209 is a wasteful number, since it uses less digits than its factorization.

5351209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314794.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 5351209 is about 2313.2680346212. The cubic root of 5351209 is about 174.9110731866.

The spelling of 5351209 in words is "five million, three hundred fifty-one thousand, two hundred nine".