2751820321 has 2 divisors, whose sum is σ = 2751820322. Its totient is φ = 2751820320.

The previous prime is 2751820301. The next prime is 2751820339. The reversal of 2751820321 is 1230281572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2578608400 + 173211921 = 50780^2 + 13161^2 .

It is a cyclic number.

It is not a de Polignac number, because 2751820321 - 2⁵ = 2751820289 is a prime.

It is not a weakly prime, because it can be changed into another prime (2751820301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1375910160 + 1375910161.

It is an arithmetic number, because the mean of its divisors is an integer number (1375910161).

Almost surely, 2^2751820321 is an apocalyptic number.

It is an amenable number.

2751820321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2751820321 is an equidigital number, since it uses as much as digits as its factorization.

2751820321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 2751820321 is about 52457.7956170482. The cubic root of 2751820321 is about 1401.3287250868.

The spelling of 2751820321 in words is "two billion, seven hundred fifty-one million, eight hundred twenty thousand, three hundred twenty-one".