5521533502444 has 24 divisors (see below), whose sum is σ = 9702389865168. Its totient is φ = 2749424856000.

The previous prime is 5521533502427. The next prime is 5521533502451. The reversal of 5521533502444 is 4442053351255.

It is a super-2 number, since 2×5521533502444² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5521533502444.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7810702 + ... + 8488234.

It is an arithmetic number, because the mean of its divisors is an integer number (404266244382).

Almost surely, 2^{5521533502444} is an apocalyptic number.

It is an amenable number.

5521533502444 is a deficient number, since it is larger than the sum of its proper divisors (4180856362724).

5521533502444 is a wasteful number, since it uses less digits than its factorization.

5521533502444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685905 (or 685903 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 43.

Adding to 5521533502444 its reverse (4442053351255), we get a palindrome (9963586853699).

The spelling of 5521533502444 in words is "five trillion, five hundred twenty-one billion, five hundred thirty-three million, five hundred two thousand, four hundred forty-four".