5520601621 has 4 divisors (see below), whose sum is σ = 5614171200. Its totient is φ = 5427032044.

The previous prime is 5520601591. The next prime is 5520601627. The reversal of 5520601621 is 1261060255.

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 cyclic number.

It is not a de Polignac number, because 5520601621 - 2⁹ = 5520601109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5520601621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5520601627) 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, 46784701 + ... + 46784818.

It is an arithmetic number, because the mean of its divisors is an integer number (1403542800).

Almost surely, 2^5520601621 is an apocalyptic number.

It is an amenable number.

5520601621 is a deficient number, since it is larger than the sum of its proper divisors (93569579).

5520601621 is an equidigital number, since it uses as much as digits as its factorization.

5520601621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93569578.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 5520601621 is about 74300.7511469433. The cubic root of 5520601621 is about 1767.3753881581.

Adding to 5520601621 its reverse (1261060255), we get a palindrome (6781661876).

The spelling of 5520601621 in words is "five billion, five hundred twenty million, six hundred one thousand, six hundred twenty-one".