53217161 has 2 divisors, whose sum is σ = 53217162. Its totient is φ = 53217160.

The previous prime is 53217133. The next prime is 53217163. The reversal of 53217161 is 16171235.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36529936 + 16687225 = 6044^2 + 4085^2 .

It is a cyclic number.

It is not a de Polignac number, because 53217161 - 2⁶ = 53217097 is a prime.

It is a Sophie Germain prime.

Together with 53217163, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 53217161.

It is not a weakly prime, because it can be changed into another prime (53217163) 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, 26608580 + 26608581.

It is an arithmetic number, because the mean of its divisors is an integer number (26608581).

Almost surely, 2^53217161 is an apocalyptic number.

It is an amenable number.

53217161 is a deficient number, since it is larger than the sum of its proper divisors (1).

53217161 is an equidigital number, since it uses as much as digits as its factorization.

53217161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260, while the sum is 26.

The square root of 53217161 is about 7295.0093214471. The cubic root of 53217161 is about 376.1409069927.

Adding to 53217161 its reverse (16171235), we get a palindrome (69388396).

The spelling of 53217161 in words is "fifty-three million, two hundred seventeen thousand, one hundred sixty-one".