187730055 has 20 divisors (see below), whose sum is σ = 336524232. Its totient is φ = 100122480.

The previous prime is 187730041. The next prime is 187730057. The reversal of 187730055 is 550037781.

It is not a de Polignac number, because 187730055 - 2¹¹ = 187728007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (187730057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 231361 + ... + 232170.

Almost surely, 2^187730055 is an apocalyptic number.

187730055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

187730055 is a deficient number, since it is larger than the sum of its proper divisors (148794177).

187730055 is an equidigital number, since it uses as much as digits as its factorization.

187730055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463548 (or 463539 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The square root of 187730055 is about 13701.4617833281. The cubic root of 187730055 is about 572.5911120348.

The spelling of 187730055 in words is "one hundred eighty-seven million, seven hundred thirty thousand, fifty-five".