52060721 has 2 divisors, whose sum is σ = 52060722. Its totient is φ = 52060720.

The previous prime is 52060669. The next prime is 52060751. The reversal of 52060721 is 12706025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49843600 + 2217121 = 7060^2 + 1489^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52060721 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (52060751) 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, 26030360 + 26030361.

It is an arithmetic number, because the mean of its divisors is an integer number (26030361).

Almost surely, 2^52060721 is an apocalyptic number.

It is an amenable number.

52060721 is a deficient number, since it is larger than the sum of its proper divisors (1).

52060721 is an equidigital number, since it uses as much as digits as its factorization.

52060721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 52060721 is about 7215.3115663844. The cubic root of 52060721 is about 373.3963423803.

Adding to 52060721 its reverse (12706025), we get a palindrome (64766746).

The spelling of 52060721 in words is "fifty-two million, sixty thousand, seven hundred twenty-one".