53565257 has 2 divisors, whose sum is σ = 53565258. Its totient is φ = 53565256.

The previous prime is 53565247. The next prime is 53565263. The reversal of 53565257 is 75256535.

53565257 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., 47665216 + 5900041 = 6904^2 + 2429^2 .

It is a cyclic number.

It is not a de Polignac number, because 53565257 - 2¹² = 53561161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53565257.

It is not a weakly prime, because it can be changed into another prime (53565217) 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, 26782628 + 26782629.

It is an arithmetic number, because the mean of its divisors is an integer number (26782629).

Almost surely, 2^53565257 is an apocalyptic number.

It is an amenable number.

53565257 is a deficient number, since it is larger than the sum of its proper divisors (1).

53565257 is an equidigital number, since it uses as much as digits as its factorization.

53565257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 157500, while the sum is 38.

The square root of 53565257 is about 7318.8289363805. The cubic root of 53565257 is about 376.9592438827.

The spelling of 53565257 in words is "fifty-three million, five hundred sixty-five thousand, two hundred fifty-seven".