9752071521 has 8 divisors (see below), whose sum is σ = 13017902560. Its totient is φ = 6493810752.

The previous prime is 9752071517. The next prime is 9752071531. The reversal of 9752071521 is 1251702579.

It is a happy number.

9752071521 is digitally balanced in base 3, 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 not a de Polignac number, because 9752071521 - 2² = 9752071517 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 9752071521.

It is not an unprimeable number, because it can be changed into a prime (9752071531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1889560 + ... + 1894713.

It is an arithmetic number, because the mean of its divisors is an integer number (1627237820).

Almost surely, 2^9752071521 is an apocalyptic number.

It is an amenable number.

9752071521 is a deficient number, since it is larger than the sum of its proper divisors (3265831039).

9752071521 is a wasteful number, since it uses less digits than its factorization.

9752071521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3785135.

The product of its (nonzero) digits is 44100, while the sum is 39.

The square root of 9752071521 is about 98752.5772878865. The cubic root of 9752071521 is about 2136.4806276084.

The spelling of 9752071521 in words is "nine billion, seven hundred fifty-two million, seventy-one thousand, five hundred twenty-one".