55103178 has 32 divisors (see below), whose sum is σ = 119923776. Its totient is φ = 16777728.

The previous prime is 55103177. The next prime is 55103179. The reversal of 55103178 is 87130155.

55103178 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55103177) and next prime (55103179).

It is not an unprimeable number, because it can be changed into a prime (55103177) 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, 3925 + ... + 11207.

It is an arithmetic number, because the mean of its divisors is an integer number (3747618).

Almost surely, 2^55103178 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55103178, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59961888).

55103178 is an abundant number, since it is smaller than the sum of its proper divisors (64820598).

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

55103178 is a wasteful number, since it uses less digits than its factorization.

55103178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7398.

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 55103178 is about 7423.1514870707. The cubic root of 55103178 is about 380.5329042096.

The spelling of 55103178 in words is "fifty-five million, one hundred three thousand, one hundred seventy-eight".