2551123345 has 8 divisors (see below), whose sum is σ = 3075077376. Its totient is φ = 2031745776.

The previous prime is 2551123339. The next prime is 2551123349. The reversal of 2551123345 is 5433211552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2551123345 - 2⁵ = 2551123313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2551123349) 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 7 ways as a sum of consecutive naturals, for example, 1142887 + ... + 1145116.

It is an arithmetic number, because the mean of its divisors is an integer number (384384672).

Almost surely, 2^2551123345 is an apocalyptic number.

It is an amenable number.

2551123345 is a deficient number, since it is larger than the sum of its proper divisors (523954031).

2551123345 is a wasteful number, since it uses less digits than its factorization.

2551123345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2288231.

The product of its digits is 18000, while the sum is 31.

The square root of 2551123345 is about 50508.6462400251. The cubic root of 2551123345 is about 1366.3977943867.

Adding to 2551123345 its reverse (5433211552), we get a palindrome (7984334897).

It can be divided in two parts, 255 and 1123345, that added together give a square (1123600 = 1060²).

The spelling of 2551123345 in words is "two billion, five hundred fifty-one million, one hundred twenty-three thousand, three hundred forty-five".