5581404 has 36 divisors (see below), whose sum is σ = 14198184. Its totient is φ = 1848672.

The previous prime is 5581403. The next prime is 5581447. The reversal of 5581404 is 4041855.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×5581404² = 62304141222432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5581403) 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 11 ways as a sum of consecutive naturals, for example, 6699 + ... + 7485.

It is an arithmetic number, because the mean of its divisors is an integer number (394394).

Almost surely, 2^5581404 is an apocalyptic number.

It is an amenable number.

5581404 is an abundant number, since it is smaller than the sum of its proper divisors (8616780).

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

5581404 is a wasteful number, since it uses less digits than its factorization.

5581404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994 (or 989 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 5581404 is about 2362.4995238095. The cubic root of 5581404 is about 177.3840173339.

The spelling of 5581404 in words is "five million, five hundred eighty-one thousand, four hundred four".