50521321 has 4 divisors (see below), whose sum is σ = 50564052. Its totient is φ = 50478592.

The previous prime is 50521313. The next prime is 50521333. The reversal of 50521321 is 12312505.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27825625 + 22695696 = 5275^2 + 4764^2 .

It is a cyclic number.

It is not a de Polignac number, because 50521321 - 2³ = 50521313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50521301) 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, 19540 + ... + 21973.

It is an arithmetic number, because the mean of its divisors is an integer number (12641013).

Almost surely, 2^50521321 is an apocalyptic number.

It is an amenable number.

50521321 is a deficient number, since it is larger than the sum of its proper divisors (42731).

50521321 is a wasteful number, since it uses less digits than its factorization.

50521321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42730.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 50521321 is about 7107.8351837954. The cubic root of 50521321 is about 369.6791008751.

Adding to 50521321 its reverse (12312505), we get a palindrome (62833826).

The spelling of 50521321 in words is "fifty million, five hundred twenty-one thousand, three hundred twenty-one".