5221868555 has 4 divisors (see below), whose sum is σ = 6266242272. Its totient is φ = 4177494840.

The previous prime is 5221868551. The next prime is 5221868599. The reversal of 5221868555 is 5558681225.

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

It is not a de Polignac number, because 5221868555 - 2² = 5221868551 is a prime.

It is a super-2 number, since 2×5221868555² = 54535822411395576050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5221868551) 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, 522186851 + ... + 522186860.

It is an arithmetic number, because the mean of its divisors is an integer number (1566560568).

Almost surely, 2^5221868555 is an apocalyptic number.

5221868555 is a deficient number, since it is larger than the sum of its proper divisors (1044373717).

5221868555 is a wasteful number, since it uses less digits than its factorization.

5221868555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044373716.

The product of its digits is 960000, while the sum is 47.

The square root of 5221868555 is about 72262.4975696246. The cubic root of 5221868555 is about 1734.9034547789.

The spelling of 5221868555 in words is "five billion, two hundred twenty-one million, eight hundred sixty-eight thousand, five hundred fifty-five".