2555301221 has 4 divisors (see below), whose sum is σ = 2787601344. Its totient is φ = 2323001100.

The previous prime is 2555301169. The next prime is 2555301223. The reversal of 2555301221 is 1221035552.

2555301221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2555301221 - 2³⁰ = 1481559397 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2555301223) 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, 116150045 + ... + 116150066.

It is an arithmetic number, because the mean of its divisors is an integer number (696900336).

Almost surely, 2^2555301221 is an apocalyptic number.

It is an amenable number.

2555301221 is a deficient number, since it is larger than the sum of its proper divisors (232300123).

2555301221 is a wasteful number, since it uses less digits than its factorization.

2555301221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232300122.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 2555301221 is about 50549.9873491577. The cubic root of 2555301221 is about 1367.1432865143.

Adding to 2555301221 its reverse (1221035552), we get a palindrome (3776336773).

The spelling of 2555301221 in words is "two billion, five hundred fifty-five million, three hundred one thousand, two hundred twenty-one".