5504220521 has 8 divisors (see below), whose sum is σ = 5639949000. Its totient is φ = 5368562560.

The previous prime is 5504220517. The next prime is 5504220571. The reversal of 5504220521 is 1250224055.

It can be written as a sum of positive squares in 4 ways, for example, as 1222481296 + 4281739225 = 34964^2 + 65435^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5504220521 - 2² = 5504220517 is a prime.

It is a super-2 number, since 2×5504220521² = 60592887087595022882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5504220571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162875 + ... + 193743.

It is an arithmetic number, because the mean of its divisors is an integer number (704993625).

Almost surely, 2^5504220521 is an apocalyptic number.

It is an amenable number.

5504220521 is a deficient number, since it is larger than the sum of its proper divisors (135728479).

5504220521 is a wasteful number, since it uses less digits than its factorization.

5504220521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35259.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 5504220521 is about 74190.4341610157. The cubic root of 5504220521 is about 1765.6255646229.

Adding to 5504220521 its reverse (1250224055), we get a palindrome (6754444576).

The spelling of 5504220521 in words is "five billion, five hundred four million, two hundred twenty thousand, five hundred twenty-one".