5511225621 has 16 divisors (see below), whose sum is σ = 8147746368. Its totient is φ = 3285379200.

The previous prime is 5511225619. The next prime is 5511225637. The reversal of 5511225621 is 1265221155.

It is not a de Polignac number, because 5511225621 - 2¹ = 5511225619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5511225521) 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, 1366896 + ... + 1370921.

It is an arithmetic number, because the mean of its divisors is an integer number (509234148).

Almost surely, 2^5511225621 is an apocalyptic number.

It is an amenable number.

5511225621 is a deficient number, since it is larger than the sum of its proper divisors (2636520747).

5511225621 is a wasteful number, since it uses less digits than its factorization.

5511225621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2737892.

The product of its digits is 6000, while the sum is 30.

The square root of 5511225621 is about 74237.6294139300. The cubic root of 5511225621 is about 1766.3742713237.

Adding to 5511225621 its reverse (1265221155), we get a palindrome (6776446776).

It can be divided in two parts, 5511 and 225621, that added together give a palindrome (231132).

The spelling of 5511225621 in words is "five billion, five hundred eleven million, two hundred twenty-five thousand, six hundred twenty-one".