2421056651 has 16 divisors (see below), whose sum is σ = 2639800800. Its totient is φ = 2220270624.

The previous prime is 2421056639. The next prime is 2421056653. The reversal of 2421056651 is 1566501242.

It is not a de Polignac number, because 2421056651 - 2¹⁰ = 2421055627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2421056653) 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 15 ways as a sum of consecutive naturals, for example, 341420 + ... + 348438.

It is an arithmetic number, because the mean of its divisors is an integer number (164987550).

Almost surely, 2^2421056651 is an apocalyptic number.

2421056651 is a deficient number, since it is larger than the sum of its proper divisors (218744149).

2421056651 is an equidigital number, since it uses as much as digits as its factorization.

2421056651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7215 (or 7189 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 2421056651 is about 49204.2340759411. The cubic root of 2421056651 is about 1342.7700644633.

Adding to 2421056651 its reverse (1566501242), we get a palindrome (3987557893).

The spelling of 2421056651 in words is "two billion, four hundred twenty-one million, fifty-six thousand, six hundred fifty-one".