52520857 has 2 divisors, whose sum is σ = 52520858. Its totient is φ = 52520856.

The previous prime is 52520813. The next prime is 52520863. The reversal of 52520857 is 75802525.

52520857 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., 39300361 + 13220496 = 6269^2 + 3636^2 .

It is a cyclic number.

It is not a de Polignac number, because 52520857 - 2⁷ = 52520729 is a prime.

It is not a weakly prime, because it can be changed into another prime (52520257) 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, 26260428 + 26260429.

It is an arithmetic number, because the mean of its divisors is an integer number (26260429).

Almost surely, 2^52520857 is an apocalyptic number.

It is an amenable number.

52520857 is a deficient number, since it is larger than the sum of its proper divisors (1).

52520857 is an equidigital number, since it uses as much as digits as its factorization.

52520857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28000, while the sum is 34.

The square root of 52520857 is about 7247.1274999133. The cubic root of 52520857 is about 374.4931986408.

The spelling of 52520857 in words is "fifty-two million, five hundred twenty thousand, eight hundred fifty-seven".