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2225321 = 7317903

2225321 has 4 divisors (see below), whose sum is σ = 2543232. Its totient is φ = 1907412.

The previous prime is 2225269. The next prime is 2225323. The reversal of 2225321 is 1235222.

2225321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2k-2225321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2225321.

It is not an unprimeable number, because it can be changed into a prime (2225323) 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 in 3 ways as a sum of consecutive naturals, for example, 158945 + ... + 158958.

It is an arithmetic number, because the mean of its divisors is an integer number (635808).

22225321 is an apocalyptic number.

It is an amenable number.

2225321 is a deficient number, since it is larger than the sum of its proper divisors (317911).

2225321 is an equidigital number, since it uses as much as digits as its factorization.

2225321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317910.

The product of its digits is 240, while the sum is 17.

The square root of 2225321 is about 1491.7509845815. The cubic root of 2225321 is about 130.5562163909.

Subtracting from 2225321 its reverse (1235222), we obtain a palindrome (990099).

The spelling of 2225321 in words is "two million, two hundred twenty-five thousand, three hundred twenty-one".

Divisors: 1 7 317903 2225321