2775091 has 8 divisors (see below), whose sum is σ = 3098304. Its totient is φ = 2463720.

The previous prime is 2775067. The next prime is 2775103. The reversal of 2775091 is 1905772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2775091 - 2¹⁵ = 2742323 is a prime.

It is a super-2 number, since 2×2775091² = 15402260116562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2775001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2461 + ... + 3406.

It is an arithmetic number, because the mean of its divisors is an integer number (387288).

2^2775091 is an apocalyptic number.

2775091 is a deficient number, since it is larger than the sum of its proper divisors (323213).

2775091 is a wasteful number, since it uses less digits than its factorization.

2775091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5921.

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 2775091 is about 1665.8604383321. The cubic root of 2775091 is about 140.5267739404.

The spelling of 2775091 in words is "two million, seven hundred seventy-five thousand, ninety-one".