5521221255 has 32 divisors (see below), whose sum is σ = 9640551168. Its totient is φ = 2675980800.

The previous prime is 5521221247. The next prime is 5521221259.

5521221255 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5521221255 - 2³ = 5521221247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5521221259) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 685200 + ... + 693210.

It is an arithmetic number, because the mean of its divisors is an integer number (301267224).

Almost surely, 2^5521221255 is an apocalyptic number.

5521221255 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

5521221255 is a deficient number, since it is larger than the sum of its proper divisors (4119329913).

5521221255 is a wasteful number, since it uses less digits than its factorization.

5521221255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12207.

The product of its digits is 10000, while the sum is 30.

The square root of 5521221255 is about 74304.9207993656. The cubic root of 5521221255 is about 1767.4415092675.

It can be divided in two parts, 55212 and 21255, that added together give a palindrome (76467).

The spelling of 5521221255 in words is "five billion, five hundred twenty-one million, two hundred twenty-one thousand, two hundred fifty-five".