5556010221 has 6 divisors (see below), whose sum is σ = 8025348110. Its totient is φ = 3704006808.

The previous prime is 5556010219. The next prime is 5556010223. The reversal of 5556010221 is 1220106555.

5556010221 is a `hidden beast` number, since 5 + 55 + 601 + 0 + 2 + 2 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (5556010219) and next prime (5556010223).

It can be written as a sum of positive squares in only one way, i.e., 3750950025 + 1805060196 = 61245^2 + 42486^2 .

It is not a de Polignac number, because 5556010221 - 2¹ = 5556010219 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5556010223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 308667226 + ... + 308667243.

Almost surely, 2^5556010221 is an apocalyptic number.

It is an amenable number.

5556010221 is a deficient number, since it is larger than the sum of its proper divisors (2469337889).

5556010221 is a wasteful number, since it uses less digits than its factorization.

5556010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617334475 (or 617334472 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 5556010221 is about 74538.6491761153. The cubic root of 5556010221 is about 1771.1459293994.

Adding to 5556010221 its reverse (1220106555), we get a palindrome (6776116776).

The spelling of 5556010221 in words is "five billion, five hundred fifty-six million, ten thousand, two hundred twenty-one".