2775047 has 4 divisors (see below), whose sum is σ = 3027336. Its totient is φ = 2522760.

The previous prime is 2775043. The next prime is 2775067. The reversal of 2775047 is 7405772.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2775047 - 2² = 2775043 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2775041) 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, 126128 + ... + 126149.

It is an arithmetic number, because the mean of its divisors is an integer number (756834).

2^2775047 is an apocalyptic number.

2775047 is a deficient number, since it is larger than the sum of its proper divisors (252289).

2775047 is a wasteful number, since it uses less digits than its factorization.

2775047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252288.

The product of its (nonzero) digits is 13720, while the sum is 32.

The square root of 2775047 is about 1665.8472318913. The cubic root of 2775047 is about 140.5260312367.

The spelling of 2775047 in words is "two million, seven hundred seventy-five thousand, forty-seven".