5564100221 has 4 divisors (see below), whose sum is σ = 5891400252. Its totient is φ = 5236800192.

The previous prime is 5564100211. The next prime is 5564100229. The reversal of 5564100221 is 1220014655.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2646588025 + 2917512196 = 51445^2 + 54014^2 .

It is a cyclic number.

It is not a de Polignac number, because 5564100221 - 2¹⁰ = 5564099197 is a prime.

It is a super-2 number, since 2×5564100221² = 61918422538664497682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5564100229) 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, 163649990 + ... + 163650023.

It is an arithmetic number, because the mean of its divisors is an integer number (1472850063).

Almost surely, 2^5564100221 is an apocalyptic number.

It is an amenable number.

5564100221 is a deficient number, since it is larger than the sum of its proper divisors (327300031).

5564100221 is a wasteful number, since it uses less digits than its factorization.

5564100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327300030.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 5564100221 is about 74592.8965853988. The cubic root of 5564100221 is about 1772.0051563807.

Adding to 5564100221 its reverse (1220014655), we get a palindrome (6784114876).

The spelling of 5564100221 in words is "five billion, five hundred sixty-four million, one hundred thousand, two hundred twenty-one".