55351870187 has 2 divisors, whose sum is σ = 55351870188. Its totient is φ = 55351870186.

The previous prime is 55351870159. The next prime is 55351870193. The reversal of 55351870187 is 78107815355.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55351870187 - 2¹⁰ = 55351869163 is a prime.

It is not a weakly prime, because it can be changed into another prime (55351870117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27675935093 + 27675935094.

It is an arithmetic number, because the mean of its divisors is an integer number (27675935094).

Almost surely, 2^55351870187 is an apocalyptic number.

55351870187 is a deficient number, since it is larger than the sum of its proper divisors (1).

55351870187 is an equidigital number, since it uses as much as digits as its factorization.

55351870187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176000, while the sum is 50.

The spelling of 55351870187 in words is "fifty-five billion, three hundred fifty-one million, eight hundred seventy thousand, one hundred eighty-seven".