51555410243 has 16 divisors (see below), whose sum is σ = 54007218720. Its totient is φ = 49149241344.

The previous prime is 51555410233. The next prime is 51555410251. The reversal of 51555410243 is 34201455515.

It is a cyclic number.

It is not a de Polignac number, because 51555410243 - 2¹⁰ = 51555409219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51555410233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4936355 + ... + 4946787.

It is an arithmetic number, because the mean of its divisors is an integer number (3375451170).

Almost surely, 2^51555410243 is an apocalyptic number.

51555410243 is a deficient number, since it is larger than the sum of its proper divisors (2451808477).

51555410243 is a wasteful number, since it uses less digits than its factorization.

51555410243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12598.

The product of its (nonzero) digits is 60000, while the sum is 35.

Adding to 51555410243 its reverse (34201455515), we get a palindrome (85756865758).

The spelling of 51555410243 in words is "fifty-one billion, five hundred fifty-five million, four hundred ten thousand, two hundred forty-three".