2756885221 has 2 divisors, whose sum is σ = 2756885222. Its totient is φ = 2756885220.

The previous prime is 2756885213. The next prime is 2756885231. The reversal of 2756885221 is 1225886572.

2756885221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2744712100 + 12173121 = 52390^2 + 3489^2 .

It is a cyclic number.

It is not a de Polignac number, because 2756885221 - 2³ = 2756885213 is a prime.

It is a super-2 number, since 2×2756885221² = 15200832243536437682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2756885231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1378442610 + 1378442611.

It is an arithmetic number, because the mean of its divisors is an integer number (1378442611).

Almost surely, 2^2756885221 is an apocalyptic number.

It is an amenable number.

2756885221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2756885221 is an equidigital number, since it uses as much as digits as its factorization.

2756885221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 537600, while the sum is 46.

The square root of 2756885221 is about 52506.0493752863. The cubic root of 2756885221 is about 1402.1879429812.

The spelling of 2756885221 in words is "two billion, seven hundred fifty-six million, eight hundred eighty-five thousand, two hundred twenty-one".