2755786513 has 4 divisors (see below), whose sum is σ = 2917891620. Its totient is φ = 2593681408.

The previous prime is 2755786493. The next prime is 2755786519. The reversal of 2755786513 is 3156875572.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2029322304 + 726464209 = 45048^2 + 26953^2 .

It is a cyclic number.

It is not a de Polignac number, because 2755786513 - 2²⁵ = 2722232081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2755786519) 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, 81052528 + ... + 81052561.

It is an arithmetic number, because the mean of its divisors is an integer number (729472905).

Almost surely, 2^2755786513 is an apocalyptic number.

It is an amenable number.

2755786513 is a deficient number, since it is larger than the sum of its proper divisors (162105107).

2755786513 is a wasteful number, since it uses less digits than its factorization.

2755786513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162105106.

The product of its digits is 1764000, while the sum is 49.

The square root of 2755786513 is about 52495.5856525099. The cubic root of 2755786513 is about 1402.0016458026.

The spelling of 2755786513 in words is "two billion, seven hundred fifty-five million, seven hundred eighty-six thousand, five hundred thirteen".