55189385 has 16 divisors (see below), whose sum is σ = 68331600. Its totient is φ = 42759936.

The previous prime is 55189363. The next prime is 55189399. The reversal of 55189385 is 58398155.

55189385 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 9815689 + 45373696 = 3133^2 + 6736^2 .

It is a cyclic number.

It is not a de Polignac number, because 55189385 - 2¹⁰ = 55188361 is a prime.

It is an unprimeable number.

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, 49211 + ... + 50319.

It is an arithmetic number, because the mean of its divisors is an integer number (4270725).

Almost surely, 2^55189385 is an apocalyptic number.

It is an amenable number.

55189385 is a deficient number, since it is larger than the sum of its proper divisors (13142215).

55189385 is a wasteful number, since it uses less digits than its factorization.

55189385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420.

The product of its digits is 216000, while the sum is 44.

The square root of 55189385 is about 7428.9558485698. The cubic root of 55189385 is about 380.7312442987.

The spelling of 55189385 in words is "fifty-five million, one hundred eighty-nine thousand, three hundred eighty-five".