52383721 has 4 divisors (see below), whose sum is σ = 56413252. Its totient is φ = 48354192.

The previous prime is 52383713. The next prime is 52383763. The reversal of 52383721 is 12738325.

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 6969600 + 45414121 = 2640^2 + 6739^2 .

It is a cyclic number.

It is not a de Polignac number, because 52383721 - 2³ = 52383713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52383701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2014746 + ... + 2014771.

It is an arithmetic number, because the mean of its divisors is an integer number (14103313).

Almost surely, 2^52383721 is an apocalyptic number.

It is an amenable number.

52383721 is a deficient number, since it is larger than the sum of its proper divisors (4029531).

52383721 is a wasteful number, since it uses less digits than its factorization.

52383721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4029530.

The product of its digits is 10080, while the sum is 31.

The square root of 52383721 is about 7237.6599118776. The cubic root of 52383721 is about 374.1669710190.

The spelling of 52383721 in words is "fifty-two million, three hundred eighty-three thousand, seven hundred twenty-one".