2551152321 has 8 divisors (see below), whose sum is σ = 3779484960. Its totient is φ = 1700768196.

The previous prime is 2551152319. The next prime is 2551152343. The reversal of 2551152321 is 1232511552.

2551152321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2551152321 - 2¹ = 2551152319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 94487123 = 2551152321 / (2 + 5 + 5 + 1 + 1 + 5 + 2 + 3 + 2 + 1).

It is not an unprimeable number, because it can be changed into a prime (2551152361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47243535 + ... + 47243588.

It is an arithmetic number, because the mean of its divisors is an integer number (472435620).

Almost surely, 2^2551152321 is an apocalyptic number.

It is an amenable number.

2551152321 is a deficient number, since it is larger than the sum of its proper divisors (1228332639).

2551152321 is an equidigital number, since it uses as much as digits as its factorization.

2551152321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94487132 (or 94487126 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 2551152321 is about 50508.9330811887. The cubic root of 2551152321 is about 1366.4029676101.

Adding to 2551152321 its reverse (1232511552), we get a palindrome (3783663873).

The spelling of 2551152321 in words is "two billion, five hundred fifty-one million, one hundred fifty-two thousand, three hundred twenty-one".