52120261 has 2 divisors, whose sum is σ = 52120262. Its totient is φ = 52120260.

The previous prime is 52120247. The next prime is 52120267. The reversal of 52120261 is 16202125.

52120261 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., 51984100 + 136161 = 7210^2 + 369^2 .

It is a cyclic number.

It is not a de Polignac number, because 52120261 - 2¹³ = 52112069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52120267) 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, 26060130 + 26060131.

It is an arithmetic number, because the mean of its divisors is an integer number (26060131).

Almost surely, 2^52120261 is an apocalyptic number.

It is an amenable number.

52120261 is a deficient number, since it is larger than the sum of its proper divisors (1).

52120261 is an equidigital number, since it uses as much as digits as its factorization.

52120261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 52120261 is about 7219.4363353381. The cubic root of 52120261 is about 373.5386348665.

Adding to 52120261 its reverse (16202125), we get a palindrome (68322386).

The spelling of 52120261 in words is "fifty-two million, one hundred twenty thousand, two hundred sixty-one".