2555221133 has 4 divisors (see below), whose sum is σ = 2666317728. Its totient is φ = 2444124540.

The previous prime is 2555221127. The next prime is 2555221139. The reversal of 2555221133 is 3311225552.

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 an interprime number because it is at equal distance from previous prime (2555221127) and next prime (2555221139).

It is a cyclic number.

It is not a de Polignac number, because 2555221133 - 2³⁰ = 1481479309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2555221096 and 2555221105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2555221139) 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, 55548263 + ... + 55548308.

It is an arithmetic number, because the mean of its divisors is an integer number (666579432).

Almost surely, 2^2555221133 is an apocalyptic number.

2555221133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2555221133 is a deficient number, since it is larger than the sum of its proper divisors (111096595).

2555221133 is a wasteful number, since it uses less digits than its factorization.

2555221133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111096594.

The product of its digits is 9000, while the sum is 29.

The square root of 2555221133 is about 50549.1951765802. The cubic root of 2555221133 is about 1367.1290034082.

Adding to 2555221133 its reverse (3311225552), we get a palindrome (5866446685).

The spelling of 2555221133 in words is "two billion, five hundred fifty-five million, two hundred twenty-one thousand, one hundred thirty-three".