2555281331 has 4 divisors (see below), whose sum is σ = 2555591592. Its totient is φ = 2554971072.

The previous prime is 2555281319. The next prime is 2555281381. The reversal of 2555281331 is 1331825552.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2555281331 - 2¹⁴ = 2555264947 is a prime.

It is a super-2 number, since 2×2555281331² = 13058925361114263122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2555281291 and 2555281300.

It is not an unprimeable number, because it can be changed into a prime (2555281381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142430 + ... + 159363.

It is an arithmetic number, because the mean of its divisors is an integer number (638897898).

Almost surely, 2^2555281331 is an apocalyptic number.

2555281331 is a deficient number, since it is larger than the sum of its proper divisors (310261).

2555281331 is an equidigital number, since it uses as much as digits as its factorization.

2555281331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310260.

The product of its digits is 36000, while the sum is 35.

The square root of 2555281331 is about 50549.7906128205. The cubic root of 2555281331 is about 1367.1397393069.

The spelling of 2555281331 in words is "two billion, five hundred fifty-five million, two hundred eighty-one thousand, three hundred thirty-one".