52020649 has 2 divisors, whose sum is σ = 52020650. Its totient is φ = 52020648.

The previous prime is 52020643. The next prime is 52020653. The reversal of 52020649 is 94602025.

52020649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43983424 + 8037225 = 6632^2 + 2835^2 .

It is a cyclic number.

It is not a de Polignac number, because 52020649 - 2¹¹ = 52018601 is a prime.

It is a super-2 number, since 2×52020649² = 5412295844762402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (52020643) 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 as a sum of consecutive naturals, namely, 26010324 + 26010325.

It is an arithmetic number, because the mean of its divisors is an integer number (26010325).

Almost surely, 2^52020649 is an apocalyptic number.

It is an amenable number.

52020649 is a deficient number, since it is larger than the sum of its proper divisors (1).

52020649 is an equidigital number, since it uses as much as digits as its factorization.

52020649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 52020649 is about 7212.5341593645. The cubic root of 52020649 is about 373.3005146711.

The spelling of 52020649 in words is "fifty-two million, twenty thousand, six hundred forty-nine".