2244431521 has 4 divisors (see below), whose sum is σ = 2245388544. Its totient is φ = 2243474500.

The previous prime is 2244431509. The next prime is 2244431531. The reversal of 2244431521 is 1251344422.

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 not a de Polignac number, because 2244431521 - 2⁵ = 2244431489 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 2244431521.

It is not an unprimeable number, because it can be changed into a prime (2244431531) 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, 474985 + ... + 479686.

It is an arithmetic number, because the mean of its divisors is an integer number (561347136).

Almost surely, 2^2244431521 is an apocalyptic number.

It is an amenable number.

2244431521 is a deficient number, since it is larger than the sum of its proper divisors (957023).

2244431521 is an equidigital number, since it uses as much as digits as its factorization.

2244431521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957022.

The product of its digits is 7680, while the sum is 28.

The square root of 2244431521 is about 47375.4316180866. The cubic root of 2244431521 is about 1309.2888008759.

Adding to 2244431521 its reverse (1251344422), we get a palindrome (3495775943).

The spelling of 2244431521 in words is "two billion, two hundred forty-four million, four hundred thirty-one thousand, five hundred twenty-one".