53385217 has 2 divisors, whose sum is σ = 53385218. Its totient is φ = 53385216.

The previous prime is 53385197. The next prime is 53385229. The reversal of 53385217 is 71258335.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47279376 + 6105841 = 6876^2 + 2471^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53385217 is a prime.

It is not a weakly prime, because it can be changed into another prime (53386217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26692608 + 26692609.

It is an arithmetic number, because the mean of its divisors is an integer number (26692609).

Almost surely, 2^53385217 is an apocalyptic number.

It is an amenable number.

53385217 is a deficient number, since it is larger than the sum of its proper divisors (1).

53385217 is an equidigital number, since it uses as much as digits as its factorization.

53385217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25200, while the sum is 34.

The square root of 53385217 is about 7306.5188017277. The cubic root of 53385217 is about 376.5364329918.

The spelling of 53385217 in words is "fifty-three million, three hundred eighty-five thousand, two hundred seventeen".