5221655423521 has 8 divisors (see below), whose sum is σ = 5520481491200. Its totient is φ = 4925229565680.

The previous prime is 5221655423507. The next prime is 5221655423557. The reversal of 5221655423521 is 1253245561225.

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

It is not a de Polignac number, because 5221655423521 - 2¹³ = 5221655415329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5221655423581) 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, 600047985 + ... + 600056686.

It is an arithmetic number, because the mean of its divisors is an integer number (690060186400).

Almost surely, 2^{5221655423521} is an apocalyptic number.

It is an amenable number.

5221655423521 is a deficient number, since it is larger than the sum of its proper divisors (298826067679).

5221655423521 is a wasteful number, since it uses less digits than its factorization.

5221655423521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200104919.

The product of its digits is 720000, while the sum is 43.

The spelling of 5221655423521 in words is "five trillion, two hundred twenty-one billion, six hundred fifty-five million, four hundred twenty-three thousand, five hundred twenty-one".