3075521 has 8 divisors (see below), whose sum is σ = 3287304. Its totient is φ = 2867200.

The previous prime is 3075497. The next prime is 3075547. The reversal of 3075521 is 1255703.

3075521 = T₅₉₃ + T₅₉₄ + ... + T₆₀₉.

It can be written as a sum of positive squares in 4 ways, for example, as 929296 + 2146225 = 964^2 + 1465^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 3-Lehmer number, since φ(3075521) divides (3075521-1)³.

It is a cyclic number.

It is not a de Polignac number, because 3075521 - 2¹⁰ = 3074497 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3075581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1121 + ... + 2721.

It is an arithmetic number, because the mean of its divisors is an integer number (410913).

Almost surely, 2^3075521 is an apocalyptic number.

It is an amenable number.

3075521 is a deficient number, since it is larger than the sum of its proper divisors (211783).

3075521 is a wasteful number, since it uses less digits than its factorization.

3075521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 3075521 is about 1753.7163396627. The cubic root of 3075521 is about 145.4251651241.

The spelling of 3075521 in words is "three million, seventy-five thousand, five hundred twenty-one".