2775 has 12 divisors (see below), whose sum is σ = 4712. Its totient is φ = 1440.

The previous prime is 2767. The next prime is 2777. The reversal of 2775 is 5772.

2775 is a nontrivial binomial coefficient, being equal to C(75, 2).

It is not a de Polignac number, because 2775 - 2³ = 2767 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a nialpdrome in base 5 and base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2777) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57 + ... + 93.

2²⁷⁷⁵ is an apocalyptic number.

2775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2775 is the 74-th triangular number.

2775 is a deficient number, since it is larger than the sum of its proper divisors (1937).

2775 is a wasteful number, since it uses less digits than its factorization.

2775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50 (or 45 counting only the distinct ones).

The product of its digits is 490, while the sum is 21.

The square root of 2775 is about 52.6782687643. The cubic root of 2775 is about 14.0525237886.

It can be divided in two parts, 277 and 5, that added together give a palindrome (282).

The spelling of 2775 in words is "two thousand, seven hundred seventy-five".