5621221255 has 8 divisors (see below), whose sum is σ = 7264347552. Its totient is φ = 4151055648.

The previous prime is 5621221253. The next prime is 5621221261. The reversal of 5621221255 is 5521221265.

It is a happy number.

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 5621221255 - 2¹ = 5621221253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5621221253) 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, 43240099 + ... + 43240228.

It is an arithmetic number, because the mean of its divisors is an integer number (908043444).

Almost surely, 2^5621221255 is an apocalyptic number.

5621221255 is a deficient number, since it is larger than the sum of its proper divisors (1643126297).

5621221255 is a wasteful number, since it uses less digits than its factorization.

5621221255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86480345.

The product of its digits is 12000, while the sum is 31.

The square root of 5621221255 is about 74974.8041344557. The cubic root of 5621221255 is about 1778.0483232493.

The spelling of 5621221255 in words is "five billion, six hundred twenty-one million, two hundred twenty-one thousand, two hundred fifty-five".