2240004521 has 2 divisors, whose sum is σ = 2240004522. Its totient is φ = 2240004520.

The previous prime is 2240004511. The next prime is 2240004527. The reversal of 2240004521 is 1254000422.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1446737296 + 793267225 = 38036^2 + 28165^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2240004521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2240004493 and 2240004502.

It is not a weakly prime, because it can be changed into another prime (2240004527) 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 as a sum of consecutive naturals, namely, 1120002260 + 1120002261.

It is an arithmetic number, because the mean of its divisors is an integer number (1120002261).

Almost surely, 2^2240004521 is an apocalyptic number.

It is an amenable number.

2240004521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2240004521 is an equidigital number, since it uses as much as digits as its factorization.

2240004521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 2240004521 is about 47328.6860265526. The cubic root of 2240004521 is about 1308.4274043422.

Adding to 2240004521 its reverse (1254000422), we get a palindrome (3494004943).

The spelling of 2240004521 in words is "two billion, two hundred forty million, four thousand, five hundred twenty-one".