5220409 has 2 divisors, whose sum is σ = 5220410. Its totient is φ = 5220408.

The previous prime is 5220403. The next prime is 5220427. The reversal of 5220409 is 9040225.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5076009 + 144400 = 2253^2 + 380^2 .

It is a cyclic number.

It is not a de Polignac number, because 5220409 - 2⁹ = 5219897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5220409.

It is not a weakly prime, because it can be changed into another prime (5220403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2610204 + 2610205.

It is an arithmetic number, because the mean of its divisors is an integer number (2610205).

Almost surely, 2^5220409 is an apocalyptic number.

It is an amenable number.

5220409 is a deficient number, since it is larger than the sum of its proper divisors (1).

5220409 is an equidigital number, since it uses as much as digits as its factorization.

5220409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 5220409 is about 2284.8214372244. The cubic root of 5220409 is about 173.4741799812.

The spelling of 5220409 in words is "five million, two hundred twenty thousand, four hundred nine".