3621531522 has 32 divisors (see below), whose sum is σ = 8764716672. Its totient is φ = 973857024.

The previous prime is 3621531521. The next prime is 3621531541. The reversal of 3621531522 is 2251351263.

It is a self number, because there is not a number n which added to its sum of digits gives 3621531522.

It is not an unprimeable number, because it can be changed into a prime (3621531521) 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, 2535373 + ... + 2536800.

It is an arithmetic number, because the mean of its divisors is an integer number (273897396).

Almost surely, 2^3621531522 is an apocalyptic number.

3621531522 is an abundant number, since it is smaller than the sum of its proper divisors (5143185150).

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

3621531522 is a wasteful number, since it uses less digits than its factorization.

3621531522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5072202.

The product of its digits is 10800, while the sum is 30.

The square root of 3621531522 is about 60179.1618585703. The cubic root of 3621531522 is about 1535.6683133560.

Adding to 3621531522 its reverse (2251351263), we get a palindrome (5872882785).

The spelling of 3621531522 in words is "three billion, six hundred twenty-one million, five hundred thirty-one thousand, five hundred twenty-two".