2052622721 has 4 divisors (see below), whose sum is σ = 2173365252. Its totient is φ = 1931880192.

The previous prime is 2052622699. The next prime is 2052622727. The reversal of 2052622721 is 1272262502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 885717121 + 1166905600 = 29761^2 + 34160^2 .

It is a cyclic number.

It is not a de Polignac number, because 2052622721 - 2¹⁴ = 2052606337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2052622727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60371240 + ... + 60371273.

It is an arithmetic number, because the mean of its divisors is an integer number (543341313).

Almost surely, 2^2052622721 is an apocalyptic number.

It is an amenable number.

2052622721 is a deficient number, since it is larger than the sum of its proper divisors (120742531).

2052622721 is a wasteful number, since it uses less digits than its factorization.

2052622721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120742530.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 2052622721 is about 45305.8795411810. The cubic root of 2052622721 is about 1270.8756069294.

The spelling of 2052622721 in words is "two billion, fifty-two million, six hundred twenty-two thousand, seven hundred twenty-one".