2448251521 has 4 divisors (see below), whose sum is σ = 2454815572. Its totient is φ = 2441687472.

The previous prime is 2448251473. The next prime is 2448251527. The reversal of 2448251521 is 1251528442.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 414692496 + 2033559025 = 20364^2 + 45095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2448251521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2448251527) 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, 3281466 + ... + 3282211.

It is an arithmetic number, because the mean of its divisors is an integer number (613703893).

Almost surely, 2^2448251521 is an apocalyptic number.

It is an amenable number.

2448251521 is a deficient number, since it is larger than the sum of its proper divisors (6564051).

2448251521 is an equidigital number, since it uses as much as digits as its factorization.

2448251521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6564050.

The product of its digits is 25600, while the sum is 34.

The square root of 2448251521 is about 49479.8092255821. The cubic root of 2448251521 is about 1347.7789764107.

Adding to 2448251521 its reverse (1251528442), we get a palindrome (3699779963).

The spelling of 2448251521 in words is "two billion, four hundred forty-eight million, two hundred fifty-one thousand, five hundred twenty-one".