2182521 has 8 divisors (see below), whose sum is σ = 3174624. Its totient is φ = 1322720.

The previous prime is 2182513. The next prime is 2182529. The reversal of 2182521 is 1252812.

It is a happy number.

2182521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2182513) and next prime (2182529).

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 2182521 - 2³ = 2182513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2182529) 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, 33036 + ... + 33101.

It is an arithmetic number, because the mean of its divisors is an integer number (396828).

2^2182521 is an apocalyptic number.

It is an amenable number.

2182521 is a deficient number, since it is larger than the sum of its proper divisors (992103).

2182521 is a wasteful number, since it uses less digits than its factorization.

2182521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66151.

The product of its digits is 320, while the sum is 21.

The square root of 2182521 is about 1477.3357776755. The cubic root of 2182521 is about 129.7137884774.

The spelling of 2182521 in words is "two million, one hundred eighty-two thousand, five hundred twenty-one".