50281313 has 4 divisors (see below), whose sum is σ = 50339268. Its totient is φ = 50223360.

The previous prime is 50281307. The next prime is 50281321. The reversal of 50281313 is 31318205.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31318205 = 5 ⋅6263641.

It can be written as a sum of positive squares in 2 ways, for example, as 23892544 + 26388769 = 4888^2 + 5137^2 .

It is a cyclic number.

It is not a de Polignac number, because 50281313 - 2⁶ = 50281249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50281303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27656 + ... + 29417.

It is an arithmetic number, because the mean of its divisors is an integer number (12584817).

Almost surely, 2^50281313 is an apocalyptic number.

It is an amenable number.

50281313 is a deficient number, since it is larger than the sum of its proper divisors (57955).

50281313 is an equidigital number, since it uses as much as digits as its factorization.

50281313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57954.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 50281313 is about 7090.9317441363. The cubic root of 50281313 is about 369.0927687867.

Adding to 50281313 its reverse (31318205), we get a palindrome (81599518).

The spelling of 50281313 in words is "fifty million, two hundred eighty-one thousand, three hundred thirteen".