2775545091 has 12 divisors (see below), whose sum is σ = 4373586360. Its totient is φ = 1682148480.

The previous prime is 2775545063. The next prime is 2775545093. The reversal of 2775545091 is 1905455772.

2775545091 is a `hidden beast` number, since 2 + 7 + 7 + 554 + 5 + 0 + 91 = 666.

It is not a de Polignac number, because 2775545091 - 2¹⁹ = 2775020803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2775545093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14017806 + ... + 14018003.

It is an arithmetic number, because the mean of its divisors is an integer number (364465530).

Almost surely, 2^2775545091 is an apocalyptic number.

2775545091 is a deficient number, since it is larger than the sum of its proper divisors (1598041269).

2775545091 is a wasteful number, since it uses less digits than its factorization.

2775545091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28035826 (or 28035823 counting only the distinct ones).

The product of its (nonzero) digits is 441000, while the sum is 45.

The square root of 2775545091 is about 52683.4422850292. The cubic root of 2775545091 is about 1405.3443836932.

The spelling of 2775545091 in words is "two billion, seven hundred seventy-five million, five hundred forty-five thousand, ninety-one".