2265321 has 4 divisors (see below), whose sum is σ = 3020432. Its totient is φ = 1510212.

The previous prime is 2265287. The next prime is 2265323. The reversal of 2265321 is 1235622.

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 not a de Polignac number, because 2265321 - 2⁹ = 2264809 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2265323) 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, 377551 + ... + 377556.

It is an arithmetic number, because the mean of its divisors is an integer number (755108).

2^2265321 is an apocalyptic number.

It is an amenable number.

2265321 is a deficient number, since it is larger than the sum of its proper divisors (755111).

2265321 is an equidigital number, since it uses as much as digits as its factorization.

2265321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755110.

The product of its digits is 720, while the sum is 21.

The square root of 2265321 is about 1505.0983356578. The cubic root of 2265321 is about 131.3338221929. Note that the first 3 decimals are identical.

The spelling of 2265321 in words is "two million, two hundred sixty-five thousand, three hundred twenty-one".