50518321 has 8 divisors (see below), whose sum is σ = 60774080. Its totient is φ = 41022288.

The previous prime is 50518297. The next prime is 50518343. The reversal of 50518321 is 12381505.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 50518321 - 2⁵ = 50518289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50518621) 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 7 ways as a sum of consecutive naturals, for example, 189786 + ... + 190051.

It is an arithmetic number, because the mean of its divisors is an integer number (7596760).

Almost surely, 2^50518321 is an apocalyptic number.

It is an amenable number.

50518321 is a deficient number, since it is larger than the sum of its proper divisors (10255759).

50518321 is a wasteful number, since it uses less digits than its factorization.

50518321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379863.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 50518321 is about 7107.6241459436. The cubic root of 50518321 is about 369.6717834414.

Adding to 50518321 its reverse (12381505), we get a palindrome (62899826).

The spelling of 50518321 in words is "fifty million, five hundred eighteen thousand, three hundred twenty-one".