50616161 has 2 divisors, whose sum is σ = 50616162. Its totient is φ = 50616160.

The previous prime is 50616151. The next prime is 50616187. The reversal of 50616161 is 16161605.

It is an a-pointer prime, because the next prime (50616187) can be obtained adding 50616161 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26419600 + 24196561 = 5140^2 + 4919^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50616161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50616161.

It is not a weakly prime, because it can be changed into another prime (50616101) 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, 25308080 + 25308081.

It is an arithmetic number, because the mean of its divisors is an integer number (25308081).

Almost surely, 2^50616161 is an apocalyptic number.

It is an amenable number.

50616161 is a deficient number, since it is larger than the sum of its proper divisors (1).

50616161 is an equidigital number, since it uses as much as digits as its factorization.

50616161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 50616161 is about 7114.5035666587. The cubic root of 50616161 is about 369.9102801695.

Adding to 50616161 its reverse (16161605), we get a palindrome (66777766).

The spelling of 50616161 in words is "fifty million, six hundred sixteen thousand, one hundred sixty-one".