50320513 has 4 divisors (see below), whose sum is σ = 50498608. Its totient is φ = 50142420.

The previous prime is 50320499. The next prime is 50320549. The reversal of 50320513 is 31502305.

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.

It is a cyclic number.

It is not a de Polignac number, because 50320513 - 2⁹ = 50320001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50320553) 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, 88623 + ... + 89188.

It is an arithmetic number, because the mean of its divisors is an integer number (12624652).

Almost surely, 2^50320513 is an apocalyptic number.

It is an amenable number.

50320513 is a deficient number, since it is larger than the sum of its proper divisors (178095).

50320513 is a wasteful number, since it uses less digits than its factorization.

50320513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178094.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 50320513 is about 7093.6952993486. The cubic root of 50320513 is about 369.1886604634.

Adding to 50320513 its reverse (31502305), we get a palindrome (81822818).

The spelling of 50320513 in words is "fifty million, three hundred twenty thousand, five hundred thirteen".