50405513 has 2 divisors, whose sum is σ = 50405514. Its totient is φ = 50405512.

The previous prime is 50405497. The next prime is 50405519. The reversal of 50405513 is 31550405.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50310649 + 94864 = 7093^2 + 308^2 .

It is a cyclic number.

It is not a de Polignac number, because 50405513 - 2⁴ = 50405497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (50405519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25202756 + 25202757.

It is an arithmetic number, because the mean of its divisors is an integer number (25202757).

Almost surely, 2^50405513 is an apocalyptic number.

It is an amenable number.

50405513 is a deficient number, since it is larger than the sum of its proper divisors (1).

50405513 is an equidigital number, since it uses as much as digits as its factorization.

50405513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 50405513 is about 7099.6840070527. The cubic root of 50405513 is about 369.3964179067.

Adding to 50405513 its reverse (31550405), we get a palindrome (81955918).

The spelling of 50405513 in words is "fifty million, four hundred five thousand, five hundred thirteen".