3524404221 has 24 divisors (see below), whose sum is σ = 5770957920. Its totient is φ = 2054712096.

The previous prime is 3524404217. The next prime is 3524404223. The reversal of 3524404221 is 1224044253.

3524404221 is a `hidden beast` number, since 35 + 2 + 4 + 404 + 221 = 666.

3524404221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3524404221 - 2² = 3524404217 is a prime.

It is a super-2 number, since 2×3524404221² = 24842850226005233682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3524404223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 790491 + ... + 794936.

It is an arithmetic number, because the mean of its divisors is an integer number (240456580).

Almost surely, 2^3524404221 is an apocalyptic number.

It is an amenable number.

3524404221 is a deficient number, since it is larger than the sum of its proper divisors (2246553699).

3524404221 is a wasteful number, since it uses less digits than its factorization.

3524404221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585465 (or 1585462 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 3524404221 is about 59366.6928588750. The cubic root of 3524404221 is about 1521.8151533378.

Adding to 3524404221 its reverse (1224044253), we get a palindrome (4748448474).

The spelling of 3524404221 in words is "three billion, five hundred twenty-four million, four hundred four thousand, two hundred twenty-one".