50505013 has 4 divisors (see below), whose sum is σ = 54390028. Its totient is φ = 46620000.

The previous prime is 50504999. The next prime is 50505017. The reversal of 50505013 is 31050505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31050505 = 5 ⋅6210101.

It can be written as a sum of positive squares in 2 ways, for example, as 20277009 + 30228004 = 4503^2 + 5498^2 .

It is a cyclic number.

It is not a de Polignac number, because 50505013 - 2⁵ = 50504981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50505017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1942488 + ... + 1942513.

It is an arithmetic number, because the mean of its divisors is an integer number (13597507).

Almost surely, 2^50505013 is an apocalyptic number.

It is an amenable number.

50505013 is a deficient number, since it is larger than the sum of its proper divisors (3885015).

50505013 is a wasteful number, since it uses less digits than its factorization.

50505013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3885014.

The product of its (nonzero) digits is 375, while the sum is 19.

The square root of 50505013 is about 7106.6879064723. The cubic root of 50505013 is about 369.6393198120.

Adding to 50505013 its reverse (31050505), we get a palindrome (81555518).

The spelling of 50505013 in words is "fifty million, five hundred five thousand, thirteen".