50403013 has 2 divisors, whose sum is σ = 50403014. Its totient is φ = 50403012.

The previous prime is 50403007. The next prime is 50403037. The reversal of 50403013 is 31030405.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46212804 + 4190209 = 6798^2 + 2047^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50403013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50403083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25201506 + 25201507.

It is an arithmetic number, because the mean of its divisors is an integer number (25201507).

Almost surely, 2^50403013 is an apocalyptic number.

It is an amenable number.

50403013 is a deficient number, since it is larger than the sum of its proper divisors (1).

50403013 is an equidigital number, since it uses as much as digits as its factorization.

50403013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 50403013 is about 7099.5079406956. The cubic root of 50403013 is about 369.3903107288.

Adding to 50403013 its reverse (31030405), we get a palindrome (81433418).

The spelling of 50403013 in words is "fifty million, four hundred three thousand, thirteen".