5547409 has 4 divisors (see below), whose sum is σ = 6339904. Its totient is φ = 4754916.

The previous prime is 5547403. The next prime is 5547431. The reversal of 5547409 is 9047455.

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: 9047455 = 5 ⋅1809491.

It is a cyclic number.

It is not a de Polignac number, because 5547409 - 2⁹ = 5546897 is a prime.

It is a super-2 number, since 2×5547409² = 61547493226562, which contains 22 as substring.

It is a Duffinian number.

5547409 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5547403) 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, 396237 + ... + 396250.

It is an arithmetic number, because the mean of its divisors is an integer number (1584976).

Almost surely, 2^5547409 is an apocalyptic number.

It is an amenable number.

5547409 is a deficient number, since it is larger than the sum of its proper divisors (792495).

5547409 is an equidigital number, since it uses as much as digits as its factorization.

5547409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792494.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 5547409 is about 2355.2938245578. The cubic root of 5547409 is about 177.0231491104.

The spelling of 5547409 in words is "five million, five hundred forty-seven thousand, four hundred nine".