2304521 has 2 divisors, whose sum is σ = 2304522. Its totient is φ = 2304520.

The previous prime is 2304479. The next prime is 2304527. The reversal of 2304521 is 1254032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1990921 + 313600 = 1411^2 + 560^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2304521 is a prime.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 2304521.

It is not a weakly prime, because it can be changed into another prime (2304527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1152260 + 1152261.

It is an arithmetic number, because the mean of its divisors is an integer number (1152261).

2^2304521 is an apocalyptic number.

It is an amenable number.

2304521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2304521 is an equidigital number, since it uses as much as digits as its factorization.

2304521 is an evil number, because the sum of its binary digits is even.

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

The square root of 2304521 is about 1518.0648866238. The cubic root of 2304521 is about 132.0870446690.

Adding to 2304521 its reverse (1254032), we get a palindrome (3558553).

The spelling of 2304521 in words is "two million, three hundred four thousand, five hundred twenty-one".