2160521 has 8 divisors (see below), whose sum is σ = 2397600. Its totient is φ = 1930240.

The previous prime is 2160469. The next prime is 2160527. The reversal of 2160521 is 1250612.

2160521 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 not a de Polignac number, because 2160521 - 2¹⁰ = 2159497 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 2160521.

It is not an unprimeable number, because it can be changed into a prime (2160527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1016 + ... + 2313.

It is an arithmetic number, because the mean of its divisors is an integer number (299700).

2^2160521 is an apocalyptic number.

It is an amenable number.

2160521 is a deficient number, since it is larger than the sum of its proper divisors (237079).

2160521 is a wasteful number, since it uses less digits than its factorization.

2160521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3399.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 2160521 is about 1469.8710827824. The cubic root of 2160521 is about 129.2764737189.

Subtracting from 2160521 its reverse (1250612), we obtain a palindrome (909909).

The spelling of 2160521 in words is "two million, one hundred sixty thousand, five hundred twenty-one".