55082278 has 32 divisors (see below), whose sum is σ = 89812800. Its totient is φ = 25242624.

The previous prime is 55082249. The next prime is 55082303. The reversal of 55082278 is 87228055.

55082278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 329751 + ... + 329917.

It is an arithmetic number, because the mean of its divisors is an integer number (2806650).

Almost surely, 2^55082278 is an apocalyptic number.

55082278 is a deficient number, since it is larger than the sum of its proper divisors (34730522).

55082278 is a wasteful number, since it uses less digits than its factorization.

55082278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384.

The product of its (nonzero) digits is 44800, while the sum is 37.

The square root of 55082278 is about 7421.7435956788. The cubic root of 55082278 is about 380.4847875449.

It can be divided in two parts, 550 and 82278, that added together give a palindrome (82828).

The spelling of 55082278 in words is "fifty-five million, eighty-two thousand, two hundred seventy-eight".