52652721 has 16 divisors (see below), whose sum is σ = 77886720. Its totient is φ = 31368720.

The previous prime is 52652711. The next prime is 52652731. The reversal of 52652721 is 12725625.

52652721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (52652711) and next prime (52652731).

It is not a de Polignac number, because 52652721 - 2⁶ = 52652657 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52652711) 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 15 ways as a sum of consecutive naturals, for example, 11575 + ... + 15468.

It is an arithmetic number, because the mean of its divisors is an integer number (4867920).

Almost surely, 2^52652721 is an apocalyptic number.

It is an amenable number.

52652721 is a deficient number, since it is larger than the sum of its proper divisors (25233999).

52652721 is a wasteful number, since it uses less digits than its factorization.

52652721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27116.

The product of its digits is 8400, while the sum is 30.

The square root of 52652721 is about 7256.2194702200. The cubic root of 52652721 is about 374.8063497939.

The spelling of 52652721 in words is "fifty-two million, six hundred fifty-two thousand, seven hundred twenty-one".