2555553321 has 20 divisors (see below), whose sum is σ = 3819641364. Its totient is φ = 1702771200.

The previous prime is 2555553307. The next prime is 2555553323. The reversal of 2555553321 is 1233555552.

2555553321 is a `hidden beast` number, since 2 + 55 + 55 + 533 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1191285225 + 1364268096 = 34515^2 + 36936^2 .

It is not a de Polignac number, because 2555553321 - 2⁹ = 2555552809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2555553323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 160981 + ... + 176141.

Almost surely, 2^2555553321 is an apocalyptic number.

It is an amenable number.

2555553321 is a deficient number, since it is larger than the sum of its proper divisors (1264088043).

2555553321 is a wasteful number, since it uses less digits than its factorization.

2555553321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17254 (or 17245 counting only the distinct ones).

The product of its digits is 112500, while the sum is 36.

The square root of 2555553321 is about 50552.4808590043. The cubic root of 2555553321 is about 1367.1882447480.

The spelling of 2555553321 in words is "two billion, five hundred fifty-five million, five hundred fifty-three thousand, three hundred twenty-one".