50405317 has 2 divisors, whose sum is σ = 50405318. Its totient is φ = 50405316.

The previous prime is 50405297. The next prime is 50405387. The reversal of 50405317 is 71350405.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37344321 + 13060996 = 6111^2 + 3614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50405317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 50405291 and 50405300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50405387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25202658 + 25202659.

It is an arithmetic number, because the mean of its divisors is an integer number (25202659).

Almost surely, 2^50405317 is an apocalyptic number.

It is an amenable number.

50405317 is a deficient number, since it is larger than the sum of its proper divisors (1).

50405317 is an equidigital number, since it uses as much as digits as its factorization.

50405317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 50405317 is about 7099.6702036081. The cubic root of 50405317 is about 369.3959391113.

The spelling of 50405317 in words is "fifty million, four hundred five thousand, three hundred seventeen".