188551055 has 16 divisors (see below), whose sum is σ = 282092544. Its totient is φ = 117538080.

The previous prime is 188551031. The next prime is 188551057. The reversal of 188551055 is 550155881.

It is a happy number.

It is not a de Polignac number, because 188551055 - 2¹⁶ = 188485519 is a prime.

It is a super-2 number, since 2×188551055² = 71103000683226050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188551057) 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, 244487 + ... + 245256.

It is an arithmetic number, because the mean of its divisors is an integer number (17630784).

Almost surely, 2^188551055 is an apocalyptic number.

188551055 is a deficient number, since it is larger than the sum of its proper divisors (93541489).

188551055 is a wasteful number, since it uses less digits than its factorization.

188551055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489766.

The product of its (nonzero) digits is 40000, while the sum is 38.

The square root of 188551055 is about 13731.3894053005. The cubic root of 188551055 is about 573.4246025679.

The spelling of 188551055 in words is "one hundred eighty-eight million, five hundred fifty-one thousand, fifty-five".