51555400024 has 16 divisors (see below), whose sum is σ = 96814419120. Its totient is φ = 25738221600.

The previous prime is 51555400003. The next prime is 51555400063. The reversal of 51555400024 is 42000455515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4929252 + ... + 4939699.

It is an arithmetic number, because the mean of its divisors is an integer number (6050901195).

Almost surely, 2^51555400024 is an apocalyptic number.

It is an amenable number.

51555400024 is a deficient number, since it is larger than the sum of its proper divisors (45259019096).

51555400024 is a wasteful number, since it uses less digits than its factorization.

51555400024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9869610 (or 9869606 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 31.

Adding to 51555400024 its reverse (42000455515), we get a palindrome (93555855539).

The spelling of 51555400024 in words is "fifty-one billion, five hundred fifty-five million, four hundred thousand, twenty-four".