52335721 has 4 divisors (see below), whose sum is σ = 53612244. Its totient is φ = 51059200.

The previous prime is 52335697. The next prime is 52335739. The reversal of 52335721 is 12753325.

52335721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13957696 + 38378025 = 3736^2 + 6195^2 .

It is a cyclic number.

It is not a de Polignac number, because 52335721 - 2¹³ = 52327529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52335721.

It is not an unprimeable number, because it can be changed into a prime (52335121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 638200 + ... + 638281.

It is an arithmetic number, because the mean of its divisors is an integer number (13403061).

Almost surely, 2^52335721 is an apocalyptic number.

It is an amenable number.

52335721 is a deficient number, since it is larger than the sum of its proper divisors (1276523).

52335721 is a wasteful number, since it uses less digits than its factorization.

52335721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276522.

The product of its digits is 6300, while the sum is 28.

The square root of 52335721 is about 7234.3431629969. The cubic root of 52335721 is about 374.0526511327.

The spelling of 52335721 in words is "fifty-two million, three hundred thirty-five thousand, seven hundred twenty-one".