5221404 has 36 divisors (see below), whose sum is σ = 13509496. Its totient is φ = 1699488.

The previous prime is 5221399. The next prime is 5221451. The reversal of 5221404 is 4041225.

5221404 is a `hidden beast` number, since 522 + 140 + 4 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139 + ... + 3234.

Almost surely, 2^5221404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5221404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6754748).

5221404 is an abundant number, since it is smaller than the sum of its proper divisors (8288092).

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

5221404 is a wasteful number, since it uses less digits than its factorization.

5221404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3426 (or 3421 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 5221404 is about 2285.0391681545. The cubic root of 5221404 is about 173.4852005637.

Adding to 5221404 its reverse (4041225), we get a palindrome (9262629).

It can be divided in two parts, 5221 and 404, that added together give a square (5625 = 75²).

The spelling of 5221404 in words is "five million, two hundred twenty-one thousand, four hundred four".