50221313 has 4 divisors (see below), whose sum is σ = 52864560. Its totient is φ = 47578068.

The previous prime is 50221231. The next prime is 50221319. The reversal of 50221313 is 31312205.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31312205 = 5 ⋅6262441.

It is a cyclic number.

It is not a de Polignac number, because 50221313 - 2¹² = 50217217 is a prime.

It is a super-3 number, since 3×50221313³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50221291 and 50221300.

It is not an unprimeable number, because it can be changed into a prime (50221319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1321595 + ... + 1321632.

It is an arithmetic number, because the mean of its divisors is an integer number (13216140).

Almost surely, 2^50221313 is an apocalyptic number.

It is an amenable number.

50221313 is a deficient number, since it is larger than the sum of its proper divisors (2643247).

50221313 is a wasteful number, since it uses less digits than its factorization.

50221313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2643246.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 50221313 is about 7086.6997255422. The cubic root of 50221313 is about 368.9458992420.

Adding to 50221313 its reverse (31312205), we get a palindrome (81533518).

The spelling of 50221313 in words is "fifty million, two hundred twenty-one thousand, three hundred thirteen".