55185306 has 32 divisors (see below), whose sum is σ = 120669696. Its totient is φ = 16686000.

The previous prime is 55185293. The next prime is 55185307. The reversal of 55185306 is 60358155.

55185306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (55185307) 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, 53011 + ... + 54041.

It is an arithmetic number, because the mean of its divisors is an integer number (3770928).

Almost surely, 2^55185306 is an apocalyptic number.

55185306 is an abundant number, since it is smaller than the sum of its proper divisors (65484390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55185306 is a wasteful number, since it uses less digits than its factorization.

55185306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1858.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 55185306 is about 7428.6813096269. The cubic root of 55185306 is about 380.7218642280.

The spelling of 55185306 in words is "fifty-five million, one hundred eighty-five thousand, three hundred six".