52066721 has 8 divisors (see below), whose sum is σ = 59567040. Its totient is φ = 44581968.

The previous prime is 52066711. The next prime is 52066727. The reversal of 52066721 is 12766025.

52066721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52066721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52066727) 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 7 ways as a sum of consecutive naturals, for example, 4490 + ... + 11148.

It is an arithmetic number, because the mean of its divisors is an integer number (7445880).

Almost surely, 2^52066721 is an apocalyptic number.

It is an amenable number.

52066721 is a deficient number, since it is larger than the sum of its proper divisors (7500319).

52066721 is a wasteful number, since it uses less digits than its factorization.

52066721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7783.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 52066721 is about 7215.7273368663. The cubic root of 52066721 is about 373.4106864766.

The spelling of 52066721 in words is "fifty-two million, sixty-six thousand, seven hundred twenty-one".