5509404 has 48 divisors (see below), whose sum is σ = 14425600. Its totient is φ = 1818288.

The previous prime is 5509393. The next prime is 5509409. The reversal of 5509404 is 4049055.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5509409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14829 + ... + 15195.

Almost surely, 2^5509404 is an apocalyptic number.

5509404 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5509404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7212800).

5509404 is an abundant number, since it is smaller than the sum of its proper divisors (8916196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5509404 is a wasteful number, since it uses less digits than its factorization.

5509404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519 (or 511 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 5509404 is about 2347.2119631597. The cubic root of 5509404 is about 176.6179637119.

The spelling of 5509404 in words is "five million, five hundred nine thousand, four hundred four".