50507161 has 2 divisors, whose sum is σ = 50507162. Its totient is φ = 50507160.

The previous prime is 50507159. The next prime is 50507173. The reversal of 50507161 is 16170505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33860761 + 16646400 = 5819^2 + 4080^2 .

It is a cyclic number.

It is not a de Polignac number, because 50507161 - 2¹ = 50507159 is a prime.

Together with 50507159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (50507101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25253580 + 25253581.

It is an arithmetic number, because the mean of its divisors is an integer number (25253581).

Almost surely, 2^50507161 is an apocalyptic number.

It is an amenable number.

50507161 is a deficient number, since it is larger than the sum of its proper divisors (1).

50507161 is an equidigital number, since it uses as much as digits as its factorization.

50507161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 50507161 is about 7106.8390301174. The cubic root of 50507161 is about 369.6445600443.

Adding to 50507161 its reverse (16170505), we get a palindrome (66677666).

The spelling of 50507161 in words is "fifty million, five hundred seven thousand, one hundred sixty-one".