2801321 has 4 divisors (see below), whose sum is σ = 2866512. Its totient is φ = 2736132.

The previous prime is 2801317. The next prime is 2801339. The reversal of 2801321 is 1231082.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2801321 - 2² = 2801317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2801321.

It is not an unprimeable number, because it can be changed into a prime (2801221) 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, 32531 + ... + 32616.

It is an arithmetic number, because the mean of its divisors is an integer number (716628).

2^2801321 is an apocalyptic number.

It is an amenable number.

2801321 is a deficient number, since it is larger than the sum of its proper divisors (65191).

2801321 is an equidigital number, since it uses as much as digits as its factorization.

2801321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65190.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 2801321 is about 1673.7147307710. The cubic root of 2801321 is about 140.9681365889.

The spelling of 2801321 in words is "two million, eight hundred one thousand, three hundred twenty-one".