52042321 has 4 divisors (see below), whose sum is σ = 55103652. Its totient is φ = 48980992.

The previous prime is 52042303. The next prime is 52042373. The reversal of 52042321 is 12324025.

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 32901696 + 19140625 = 5736^2 + 4375^2 .

It is a cyclic number.

It is not a de Polignac number, because 52042321 - 2⁹ = 52041809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52042391) 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 3 ways as a sum of consecutive naturals, for example, 1530640 + ... + 1530673.

It is an arithmetic number, because the mean of its divisors is an integer number (13775913).

Almost surely, 2^52042321 is an apocalyptic number.

It is an amenable number.

52042321 is a deficient number, since it is larger than the sum of its proper divisors (3061331).

52042321 is a wasteful number, since it uses less digits than its factorization.

52042321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3061330.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 52042321 is about 7214.0363874879. The cubic root of 52042321 is about 373.3523469448.

Adding to 52042321 its reverse (12324025), we get a palindrome (64366346).

The spelling of 52042321 in words is "fifty-two million, forty-two thousand, three hundred twenty-one".