2551243235 has 4 divisors (see below), whose sum is σ = 3061491888. Its totient is φ = 2040994584.

The previous prime is 2551243231. The next prime is 2551243241. The reversal of 2551243235 is 5323421552.

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 2551243235 - 2² = 2551243231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2551243231) 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 3 ways as a sum of consecutive naturals, for example, 255124319 + ... + 255124328.

It is an arithmetic number, because the mean of its divisors is an integer number (765372972).

Almost surely, 2^2551243235 is an apocalyptic number.

2551243235 is a deficient number, since it is larger than the sum of its proper divisors (510248653).

2551243235 is an equidigital number, since it uses as much as digits as its factorization.

2551243235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510248652.

The product of its digits is 36000, while the sum is 32.

The square root of 2551243235 is about 50509.8330525849. The cubic root of 2551243235 is about 1366.4191986654.

Adding to 2551243235 its reverse (5323421552), we get a palindrome (7874664787).

The spelling of 2551243235 in words is "two billion, five hundred fifty-one million, two hundred forty-three thousand, two hundred thirty-five".