2756076221 has 2 divisors, whose sum is σ = 2756076222. Its totient is φ = 2756076220.

The previous prime is 2756076203. The next prime is 2756076247. The reversal of 2756076221 is 1226706572.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2569070596 + 187005625 = 50686^2 + 13675^2 .

It is a cyclic number.

It is not a de Polignac number, because 2756076221 - 2²² = 2751881917 is a prime.

It is a super-2 number, since 2×2756076221² = 15191912271923281682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2756376221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1378038110 + 1378038111.

It is an arithmetic number, because the mean of its divisors is an integer number (1378038111).

Almost surely, 2^2756076221 is an apocalyptic number.

It is an amenable number.

2756076221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2756076221 is an equidigital number, since it uses as much as digits as its factorization.

2756076221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 2756076221 is about 52498.3449358168. The cubic root of 2756076221 is about 1402.0507735632.

The spelling of 2756076221 in words is "two billion, seven hundred fifty-six million, seventy-six thousand, two hundred twenty-one".