2945321 has 2 divisors, whose sum is σ = 2945322. Its totient is φ = 2945320.

The previous prime is 2945309. The next prime is 2945333. The reversal of 2945321 is 1235492.

2945321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (2945309) and next prime (2945333).

It can be written as a sum of positive squares in only one way, i.e., 2941225 + 4096 = 1715^2 + 64^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2945321 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2945351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1472660 + 1472661.

It is an arithmetic number, because the mean of its divisors is an integer number (1472661).

2^2945321 is an apocalyptic number.

It is an amenable number.

2945321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2945321 is an equidigital number, since it uses as much as digits as its factorization.

2945321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 26.

The square root of 2945321 is about 1716.1937536304. The cubic root of 2945321 is about 143.3433482576.

The spelling of 2945321 in words is "two million, nine hundred forty-five thousand, three hundred twenty-one".