2776255 has 4 divisors (see below), whose sum is σ = 3331512. Its totient is φ = 2221000.

The previous prime is 2776217. The next prime is 2776259. The reversal of 2776255 is 5526772.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2776255 - 2¹¹ = 2774207 is a prime.

It is a Duffinian number.

2776255 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2776255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2776259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277621 + ... + 277630.

It is an arithmetic number, because the mean of its divisors is an integer number (832878).

2^2776255 is an apocalyptic number.

2776255 is a deficient number, since it is larger than the sum of its proper divisors (555257).

2776255 is an equidigital number, since it uses as much as digits as its factorization.

2776255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555256.

The product of its digits is 29400, while the sum is 34.

The square root of 2776255 is about 1666.2097707072. The cubic root of 2776255 is about 140.5464189779.

The spelling of 2776255 in words is "two million, seven hundred seventy-six thousand, two hundred fifty-five".