2775552065 has 24 divisors (see below), whose sum is σ = 3934459008. Its totient is φ = 1863301440.

The previous prime is 2775552061. The next prime is 2775552079. The reversal of 2775552065 is 5602555772.

It is not a de Polignac number, because 2775552065 - 2² = 2775552061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2775552061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140009 + ... + 158598.

It is an arithmetic number, because the mean of its divisors is an integer number (163935792).

Almost surely, 2^2775552065 is an apocalyptic number.

It is an amenable number.

2775552065 is a deficient number, since it is larger than the sum of its proper divisors (1158906943).

2775552065 is a wasteful number, since it uses less digits than its factorization.

2775552065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298649 (or 298636 counting only the distinct ones).

The product of its (nonzero) digits is 735000, while the sum is 44.

The square root of 2775552065 is about 52683.5084727659. The cubic root of 2775552065 is about 1405.3455607428.

The spelling of 2775552065 in words is "two billion, seven hundred seventy-five million, five hundred fifty-two thousand, sixty-five".