55019186 has 8 divisors (see below), whose sum is σ = 83300400. Its totient is φ = 27252388.

The previous prime is 55019179. The next prime is 55019189. The reversal of 55019186 is 68191055.

55019186 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×55019186² = 6054221656205192, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55019189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128336 + ... + 128763.

It is an arithmetic number, because the mean of its divisors is an integer number (10412550).

Almost surely, 2^55019186 is an apocalyptic number.

55019186 is a deficient number, since it is larger than the sum of its proper divisors (28281214).

55019186 is a wasteful number, since it uses less digits than its factorization.

55019186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257208.

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 55019186 is about 7417.4918941648. The cubic root of 55019186 is about 380.3394612055.

The spelling of 55019186 in words is "fifty-five million, nineteen thousand, one hundred eighty-six".