2755770209 has 4 divisors (see below), whose sum is σ = 2755893504. Its totient is φ = 2755646916.

The previous prime is 2755770161. The next prime is 2755770229. The reversal of 2755770209 is 9020775572.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2755770209 - 2¹⁶ = 2755704673 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 2755770209.

It is not an unprimeable number, because it can be changed into a prime (2755770229) 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, 17657 + ... + 76310.

It is an arithmetic number, because the mean of its divisors is an integer number (688973376).

Almost surely, 2^2755770209 is an apocalyptic number.

It is an amenable number.

2755770209 is a deficient number, since it is larger than the sum of its proper divisors (123295).

2755770209 is an equidigital number, since it uses as much as digits as its factorization.

2755770209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123294.

The product of its (nonzero) digits is 308700, while the sum is 44.

The square root of 2755770209 is about 52495.4303630326. The cubic root of 2755770209 is about 1401.9988809198.

The spelling of 2755770209 in words is "two billion, seven hundred fifty-five million, seven hundred seventy thousand, two hundred nine".