2552321 has 4 divisors (see below), whose sum is σ = 2600532. Its totient is φ = 2504112.

The previous prime is 2552317. The next prime is 2552357. The reversal of 2552321 is 1232552.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2265025 + 287296 = 1505^2 + 536^2 .

It is a cyclic number.

It is not a de Polignac number, because 2552321 - 2² = 2552317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2552293 and 2552302.

It is not an unprimeable number, because it can be changed into a prime (2552021) 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, 24026 + ... + 24131.

It is an arithmetic number, because the mean of its divisors is an integer number (650133).

2^2552321 is an apocalyptic number.

It is an amenable number.

2552321 is a deficient number, since it is larger than the sum of its proper divisors (48211).

2552321 is an equidigital number, since it uses as much as digits as its factorization.

2552321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48210.

The product of its digits is 600, while the sum is 20.

The square root of 2552321 is about 1597.5985102647. The cubic root of 2552321 is about 136.6611584798.

Adding to 2552321 its reverse (1232552), we get a palindrome (3784873).

The spelling of 2552321 in words is "two million, five hundred fifty-two thousand, three hundred twenty-one".