2755760021 has 8 divisors (see below), whose sum is σ = 3152253504. Its totient is φ = 2359969920.

The previous prime is 2755759961. The next prime is 2755760039. The reversal of 2755760021 is 1200675572.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2755760021 - 2²⁶ = 2688651157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2755760321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167420 + ... + 183141.

It is an arithmetic number, because the mean of its divisors is an integer number (394031688).

Almost surely, 2^2755760021 is an apocalyptic number.

It is an amenable number.

2755760021 is a deficient number, since it is larger than the sum of its proper divisors (396493483).

2755760021 is a wasteful number, since it uses less digits than its factorization.

2755760021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351691.

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 2755760021 is about 52495.3333259253. Note that the first 4 decimals coincide. The cubic root of 2755760021 is about 1401.9971532017.

It can be divided in two parts, 27557 and 60021, that added together give a palindrome (87578).

The spelling of 2755760021 in words is "two billion, seven hundred fifty-five million, seven hundred sixty thousand, twenty-one".