55019185 has 16 divisors (see below), whose sum is σ = 73026576. Its totient is φ = 39529728.

The previous prime is 55019179. The next prime is 55019189. The reversal of 55019185 is 58191055.

55019185 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 1787569 + 53231616 = 1337^2 + 7296^2 .

It is a cyclic number.

It is not a de Polignac number, because 55019185 - 2⁹ = 55018673 is a prime.

It is a super-2 number, since 2×55019185² = 6054221436128450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55019185.

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 15 ways as a sum of consecutive naturals, for example, 9034 + ... + 13843.

It is an arithmetic number, because the mean of its divisors is an integer number (4564161).

Almost surely, 2^55019185 is an apocalyptic number.

It is an amenable number.

55019185 is a deficient number, since it is larger than the sum of its proper divisors (18007391).

55019185 is a wasteful number, since it uses less digits than its factorization.

55019185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22932.

The product of its (nonzero) digits is 9000, while the sum is 34.

The square root of 55019185 is about 7417.4918267565. The cubic root of 55019185 is about 380.3394589012.

The spelling of 55019185 in words is "fifty-five million, nineteen thousand, one hundred eighty-five".