51004455424 has 40 divisors (see below), whose sum is σ = 109748483460. Its totient is φ = 23540514816.

The previous prime is 51004455409. The next prime is 51004455427. The reversal of 51004455424 is 42455440015.

It can be written as a sum of positive squares in 2 ways, for example, as 42898694400 + 8105761024 = 207120^2 + 90032^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51004455424.

It is not an unprimeable number, because it can be changed into a prime (51004455427) 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, 3824809 + ... + 3838120.

Almost surely, 2^51004455424 is an apocalyptic number.

It is an amenable number.

51004455424 is an abundant number, since it is smaller than the sum of its proper divisors (58744028036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51004455424 is an equidigital number, since it uses as much as digits as its factorization.

51004455424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7662960 (or 7662944 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 34.

Adding to 51004455424 its reverse (42455440015), we get a palindrome (93459895439).

The spelling of 51004455424 in words is "fifty-one billion, four million, four hundred fifty-five thousand, four hundred twenty-four".