51550189555 has 16 divisors (see below), whose sum is σ = 62660390400. Its totient is φ = 40706995680.

The previous prime is 51550189553. The next prime is 51550189567. The reversal of 51550189555 is 55598105515.

It is not a de Polignac number, because 51550189555 - 2¹ = 51550189553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51550189499 and 51550189508.

It is not an unprimeable number, because it can be changed into a prime (51550189553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1619140 + ... + 1650670.

It is an arithmetic number, because the mean of its divisors is an integer number (3916274400).

Almost surely, 2^51550189555 is an apocalyptic number.

51550189555 is a deficient number, since it is larger than the sum of its proper divisors (11110200845).

51550189555 is a wasteful number, since it uses less digits than its factorization.

51550189555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35754.

The product of its (nonzero) digits is 1125000, while the sum is 49.

The spelling of 51550189555 in words is "fifty-one billion, five hundred fifty million, one hundred eighty-nine thousand, five hundred fifty-five".