3524053621 has 4 divisors (see below), whose sum is σ = 3844422144. Its totient is φ = 3203685100.

The previous prime is 3524053597. The next prime is 3524053627. The reversal of 3524053621 is 1263504253.

It is a happy number.

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.

It is a de Polignac number, because none of the positive numbers 2^k-3524053621 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3524053627) 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, 160184245 + ... + 160184266.

It is an arithmetic number, because the mean of its divisors is an integer number (961105536).

Almost surely, 2^3524053621 is an apocalyptic number.

It is an amenable number.

3524053621 is a deficient number, since it is larger than the sum of its proper divisors (320368523).

3524053621 is a wasteful number, since it uses less digits than its factorization.

3524053621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320368522.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 3524053621 is about 59363.7399512531. The cubic root of 3524053621 is about 1521.7646893868.

Adding to 3524053621 its reverse (1263504253), we get a palindrome (4787557874).

The spelling of 3524053621 in words is "three billion, five hundred twenty-four million, fifty-three thousand, six hundred twenty-one".