2520321224 has 16 divisors (see below), whose sum is σ = 4778700300. Its totient is φ = 1246001152.

The previous prime is 2520321197. The next prime is 2520321227. The reversal of 2520321224 is 4221230252.

It can be written as a sum of positive squares in 2 ways, for example, as 2383197124 + 137124100 = 48818^2 + 11710^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2520321224.

It is not an unprimeable number, because it can be changed into a prime (2520321227) 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 in 3 ways as a sum of consecutive naturals, for example, 1769177 + ... + 1770600.

Almost surely, 2^2520321224 is an apocalyptic number.

It is an amenable number.

2520321224 is a deficient number, since it is larger than the sum of its proper divisors (2258379076).

2520321224 is a wasteful number, since it uses less digits than its factorization.

2520321224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3539872 (or 3539868 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 2520321224 is about 50202.8009577155. The cubic root of 2520321224 is about 1360.8762418368.

Adding to 2520321224 its reverse (4221230252), we get a palindrome (6741551476).

The spelling of 2520321224 in words is "two billion, five hundred twenty million, three hundred twenty-one thousand, two hundred twenty-four".