2555123331 has 4 divisors (see below), whose sum is σ = 3406831112. Its totient is φ = 1703415552.

The previous prime is 2555123303. The next prime is 2555123381. The reversal of 2555123331 is 1333215552.

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

It is not a de Polignac number, because 2555123331 - 2⁶ = 2555123267 is a prime.

It is a super-3 number, since 3×2555123331³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2555123381) 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, 425853886 + ... + 425853891.

It is an arithmetic number, because the mean of its divisors is an integer number (851707778).

Almost surely, 2^2555123331 is an apocalyptic number.

2555123331 is a deficient number, since it is larger than the sum of its proper divisors (851707781).

2555123331 is an equidigital number, since it uses as much as digits as its factorization.

2555123331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851707780.

The product of its digits is 13500, while the sum is 30.

The square root of 2555123331 is about 50548.2277730881. The cubic root of 2555123331 is about 1367.1115607356. Note that the first 3 decimals are identical.

Adding to 2555123331 its reverse (1333215552), we get a palindrome (3888338883).

The spelling of 2555123331 in words is "two billion, five hundred fifty-five million, one hundred twenty-three thousand, three hundred thirty-one".