2750535721 has 4 divisors (see below), whose sum is σ = 2814501712. Its totient is φ = 2686569732.

The previous prime is 2750535701. The next prime is 2750535731. The reversal of 2750535721 is 1275350572.

2750535721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 2750535721 - 2¹¹ = 2750533673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2750535701) 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, 31982931 + ... + 31983016.

It is an arithmetic number, because the mean of its divisors is an integer number (703625428).

Almost surely, 2^2750535721 is an apocalyptic number.

It is an amenable number.

2750535721 is a deficient number, since it is larger than the sum of its proper divisors (63965991).

2750535721 is an equidigital number, since it uses as much as digits as its factorization.

2750535721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63965990.

The product of its (nonzero) digits is 73500, while the sum is 37.

The square root of 2750535721 is about 52445.5500590851. The cubic root of 2750535721 is about 1401.1106358639.

The spelling of 2750535721 in words is "two billion, seven hundred fifty million, five hundred thirty-five thousand, seven hundred twenty-one".