2775961 has 4 divisors (see below), whose sum is σ = 2835072. Its totient is φ = 2716852.

The previous prime is 2775959. The next prime is 2775989. The reversal of 2775961 is 1695772.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2775961 - 2¹ = 2775959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2775961.

It is not an unprimeable number, because it can be changed into a prime (2775911) 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, 29485 + ... + 29578.

It is an arithmetic number, because the mean of its divisors is an integer number (708768).

2^2775961 is an apocalyptic number.

It is an amenable number.

2775961 is a deficient number, since it is larger than the sum of its proper divisors (59111).

2775961 is an equidigital number, since it uses as much as digits as its factorization.

2775961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59110.

The product of its digits is 26460, while the sum is 37.

The square root of 2775961 is about 1666.1215441858. The cubic root of 2775961 is about 140.5414576054.

The spelling of 2775961 in words is "two million, seven hundred seventy-five thousand, nine hundred sixty-one".