2993081521 has 4 divisors (see below), whose sum is σ = 3062688112. Its totient is φ = 2923474932.

The previous prime is 2993081491. The next prime is 2993081543. The reversal of 2993081521 is 1251803992.

2993081521 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2993081521 - 2³¹ = 845597873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2993081551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34803231 + ... + 34803316.

It is an arithmetic number, because the mean of its divisors is an integer number (765672028).

Almost surely, 2^2993081521 is an apocalyptic number.

It is an amenable number.

2993081521 is a deficient number, since it is larger than the sum of its proper divisors (69606591).

2993081521 is an equidigital number, since it uses as much as digits as its factorization.

2993081521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69606590.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 2993081521 is about 54709.0625125308. The cubic root of 2993081521 is about 1441.1400310154.

The spelling of 2993081521 in words is "two billion, nine hundred ninety-three million, eighty-one thousand, five hundred twenty-one".