4752585721 has 9 divisors (see below), whose sum is σ = 5147261679. Its totient is φ = 4386174936.

The previous prime is 4752585689. The next prime is 4752585751. The reversal of 4752585721 is 1275852574.

It is a happy number.

The square root of 4752585721 is 68939.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 703045225 + 4049540496 = 26515^2 + 63636^2 .

It is not a de Polignac number, because 4752585721 - 2⁵ = 4752585689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4752585751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 893556 + ... + 898858.

Almost surely, 2^4752585721 is an apocalyptic number.

4752585721 is the 68939-th square number.

4752585721 is the 34470-th centered octagonal number.

It is an amenable number.

4752585721 is a deficient number, since it is larger than the sum of its proper divisors (394675958).

4752585721 is an frugal number, since it uses more digits than its factorization.

4752585721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10632 (or 5316 counting only the distinct ones).

The product of its digits is 784000, while the sum is 46.

The cubic root of 4752585721 is about 1681.2926701884.

The spelling of 4752585721 in words is "four billion, seven hundred fifty-two million, five hundred eighty-five thousand, seven hundred twenty-one".