2321225551 has 4 divisors (see below), whose sum is σ = 2324393032. Its totient is φ = 2318058072.

The previous prime is 2321225539. The next prime is 2321225563. The reversal of 2321225551 is 1555221232.

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

It is an interprime number because it is at equal distance from previous prime (2321225539) and next prime (2321225563).

It is a cyclic number.

It is not a de Polignac number, because 2321225551 - 2¹³ = 2321217359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321225521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1582641 + ... + 1584106.

It is an arithmetic number, because the mean of its divisors is an integer number (581098258).

Almost surely, 2^2321225551 is an apocalyptic number.

2321225551 is a deficient number, since it is larger than the sum of its proper divisors (3167481).

2321225551 is an equidigital number, since it uses as much as digits as its factorization.

2321225551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3167480.

The product of its digits is 6000, while the sum is 28.

The square root of 2321225551 is about 48179.0986943509. The cubic root of 2321225551 is about 1324.0542535111.

Adding to 2321225551 its reverse (1555221232), we get a palindrome (3876446783).

The spelling of 2321225551 in words is "two billion, three hundred twenty-one million, two hundred twenty-five thousand, five hundred fifty-one".