3621105523 has 16 divisors (see below), whose sum is σ = 4160111616. Its totient is φ = 3087564480.

The previous prime is 3621105497. The next prime is 3621105559. The reversal of 3621105523 is 3255011263.

It is not a de Polignac number, because 3621105523 - 2¹⁷ = 3620974451 is a prime.

It is a super-2 number, since 2×3621105523² = 26224810417402207058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3621105491 and 3621105500.

It is not an unprimeable number, because it can be changed into a prime (3621105563) 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, 1806840 + ... + 1808842.

It is an arithmetic number, because the mean of its divisors is an integer number (260006976).

Almost surely, 2^3621105523 is an apocalyptic number.

3621105523 is a deficient number, since it is larger than the sum of its proper divisors (539006093).

3621105523 is a wasteful number, since it uses less digits than its factorization.

3621105523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3234.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 3621105523 is about 60175.6223316386. The cubic root of 3621105523 is about 1535.6080976881.

Adding to 3621105523 its reverse (3255011263), we get a palindrome (6876116786).

The spelling of 3621105523 in words is "three billion, six hundred twenty-one million, one hundred five thousand, five hundred twenty-three".