2265021 has 24 divisors (see below), whose sum is σ = 3616704. Its totient is φ = 1354560.

The previous prime is 2265019. The next prime is 2265049. The reversal of 2265021 is 1205622.

It is not a de Polignac number, because 2265021 - 2¹ = 2265019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2264985 and 2265003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2265001) 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 23 ways as a sum of consecutive naturals, for example, 13480 + ... + 13646.

It is an arithmetic number, because the mean of its divisors is an integer number (150696).

2^2265021 is an apocalyptic number.

It is an amenable number.

2265021 is a deficient number, since it is larger than the sum of its proper divisors (1351683).

2265021 is a wasteful number, since it uses less digits than its factorization.

2265021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321 (or 318 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2265021 is about 1504.9986710958. The cubic root of 2265021 is about 131.3280243559.

The spelling of 2265021 in words is "two million, two hundred sixty-five thousand, twenty-one".