53650321 has 4 divisors (see below), whose sum is σ = 53682100. Its totient is φ = 53618544.

The previous prime is 53650313. The next prime is 53650327. The reversal of 53650321 is 12305635.

It is a happy number.

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 48650625 + 4999696 = 6975^2 + 2236^2 .

It is a cyclic number.

It is not a de Polignac number, because 53650321 - 2³ = 53650313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53650327) 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, 13206 + ... + 16783.

It is an arithmetic number, because the mean of its divisors is an integer number (13420525).

Almost surely, 2^53650321 is an apocalyptic number.

It is an amenable number.

53650321 is a deficient number, since it is larger than the sum of its proper divisors (31779).

53650321 is a wasteful number, since it uses less digits than its factorization.

53650321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31778.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 53650321 is about 7324.6379432706. The cubic root of 53650321 is about 377.1586810053.

Adding to 53650321 its reverse (12305635), we get a palindrome (65955956).

The spelling of 53650321 in words is "fifty-three million, six hundred fifty thousand, three hundred twenty-one".