2178055 has 12 divisors (see below), whose sum is σ = 2865672. Its totient is φ = 1576080.

The previous prime is 2178049. The next prime is 2178073. The reversal of 2178055 is 5508712.

2178055 = 600² + 601² + ... + 605².

It is not a de Polignac number, because 2178055 - 2¹⁵ = 2145287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10846 + ... + 11044.

It is an arithmetic number, because the mean of its divisors is an integer number (238806).

2^2178055 is an apocalyptic number.

2178055 is a deficient number, since it is larger than the sum of its proper divisors (687617).

2178055 is an equidigital number, since it uses as much as digits as its factorization.

2178055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 2178055 is about 1475.8234989320. The cubic root of 2178055 is about 129.6252521223.

The spelling of 2178055 in words is "two million, one hundred seventy-eight thousand, fifty-five".