3056521 has 4 divisors (see below), whose sum is σ = 3291652. Its totient is φ = 2821392.

The previous prime is 3056519. The next prime is 3056531. The reversal of 3056521 is 1256503.

It is a happy number.

3056521 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 an emirpimes, since its reverse is a distinct semiprime: 1256503 = 43 ⋅29221.

It can be written as a sum of positive squares in 2 ways, for example, as 697225 + 2359296 = 835^2 + 1536^2 .

It is a cyclic number.

It is not a de Polignac number, because 3056521 - 2¹ = 3056519 is a prime.

It is an alternating number because its digits alternate between odd and even.

3056521 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3056492 and 3056501.

It is not an unprimeable number, because it can be changed into a prime (3056531) 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 3 ways as a sum of consecutive naturals, for example, 117546 + ... + 117571.

It is an arithmetic number, because the mean of its divisors is an integer number (822913).

Almost surely, 2^3056521 is an apocalyptic number.

It is an amenable number.

3056521 is a deficient number, since it is larger than the sum of its proper divisors (235131).

3056521 is a wasteful number, since it uses less digits than its factorization.

3056521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235130.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 3056521 is about 1748.2908796879. The cubic root of 3056521 is about 145.1250763830.

The spelling of 3056521 in words is "three million, fifty-six thousand, five hundred twenty-one".