2054133721 has 2 divisors, whose sum is σ = 2054133722. Its totient is φ = 2054133720.

The previous prime is 2054133701. The next prime is 2054133727. The reversal of 2054133721 is 1273314502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1680098121 + 374035600 = 40989^2 + 19340^2 .

It is a cyclic number.

It is not a de Polignac number, because 2054133721 - 2⁹ = 2054133209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2054133721.

It is not a weakly prime, because it can be changed into another prime (2054133727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1027066860 + 1027066861.

It is an arithmetic number, because the mean of its divisors is an integer number (1027066861).

Almost surely, 2^2054133721 is an apocalyptic number.

It is an amenable number.

2054133721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2054133721 is an equidigital number, since it uses as much as digits as its factorization.

2054133721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 2054133721 is about 45322.5520133189. The cubic root of 2054133721 is about 1271.1873742469.

The spelling of 2054133721 in words is "two billion, fifty-four million, one hundred thirty-three thousand, seven hundred twenty-one".