2825021 has 4 divisors (see below), whose sum is σ = 2947872. Its totient is φ = 2702172.

The previous prime is 2825003. The next prime is 2825033. The reversal of 2825021 is 1205282.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2825021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2824984 and 2825002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2825051) 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 3 ways as a sum of consecutive naturals, for example, 61391 + ... + 61436.

It is an arithmetic number, because the mean of its divisors is an integer number (736968).

2^2825021 is an apocalyptic number.

It is an amenable number.

2825021 is a deficient number, since it is larger than the sum of its proper divisors (122851).

2825021 is a wasteful number, since it uses less digits than its factorization.

2825021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122850.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 2825021 is about 1680.7798785088. The cubic root of 2825021 is about 141.3645646884.

The spelling of 2825021 in words is "two million, eight hundred twenty-five thousand, twenty-one".