4052366821 has 2 divisors, whose sum is σ = 4052366822. Its totient is φ = 4052366820.

The previous prime is 4052366639. The next prime is 4052366831. The reversal of 4052366821 is 1286632504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2917620225 + 1134746596 = 54015^2 + 33686^2 .

It is a cyclic number.

It is not a de Polignac number, because 4052366821 - 2²⁷ = 3918149093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4052366831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2026183410 + 2026183411.

It is an arithmetic number, because the mean of its divisors is an integer number (2026183411).

Almost surely, 2^4052366821 is an apocalyptic number.

It is an amenable number.

4052366821 is a deficient number, since it is larger than the sum of its proper divisors (1).

4052366821 is an equidigital number, since it uses as much as digits as its factorization.

4052366821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 4052366821 is about 63658.2030927672. The cubic root of 4052366821 is about 1594.2983022715.

The spelling of 4052366821 in words is "four billion, fifty-two million, three hundred sixty-six thousand, eight hundred twenty-one".