50520013 has 2 divisors, whose sum is σ = 50520014. Its totient is φ = 50520012.

The previous prime is 50520011. The next prime is 50520023. The reversal of 50520013 is 31002505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33849124 + 16670889 = 5818^2 + 4083^2 .

It is a cyclic number.

It is not a de Polignac number, because 50520013 - 2¹ = 50520011 is a prime.

Together with 50520011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50520011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25260006 + 25260007.

It is an arithmetic number, because the mean of its divisors is an integer number (25260007).

Almost surely, 2^50520013 is an apocalyptic number.

It is an amenable number.

50520013 is a deficient number, since it is larger than the sum of its proper divisors (1).

50520013 is an equidigital number, since it uses as much as digits as its factorization.

50520013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 50520013 is about 7107.7431720624. The cubic root of 50520013 is about 369.6759105096.

Adding to 50520013 its reverse (31002505), we get a palindrome (81522518).

The spelling of 50520013 in words is "fifty million, five hundred twenty thousand, thirteen".