2905521 has 16 divisors (see below), whose sum is σ = 4281984. Its totient is φ = 1743104.

The previous prime is 2905489. The next prime is 2905549. The reversal of 2905521 is 1255092.

2905521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2905521 - 2⁵ = 2905489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2905491 and 2905500.

It is not an unprimeable number, because it can be changed into a prime (2905571) 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 15 ways as a sum of consecutive naturals, for example, 66 + ... + 2411.

It is an arithmetic number, because the mean of its divisors is an integer number (267624).

2^2905521 is an apocalyptic number.

It is an amenable number.

2905521 is a deficient number, since it is larger than the sum of its proper divisors (1376463).

2905521 is a wasteful number, since it uses less digits than its factorization.

2905521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2520.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 2905521 is about 1704.5588872198. The cubic root of 2905521 is about 142.6947537164.

The spelling of 2905521 in words is "two million, nine hundred five thousand, five hundred twenty-one".