2575221 has 16 divisors (see below), whose sum is σ = 3800640. Its totient is φ = 1537920.

The previous prime is 2575219. The next prime is 2575231. The reversal of 2575221 is 1225752.

It is not a de Polignac number, because 2575221 - 2¹ = 2575219 is a prime.

It is a Curzon number.

2575221 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2575191 and 2575200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2575231) 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 15 ways as a sum of consecutive naturals, for example, 1875 + ... + 2943.

It is an arithmetic number, because the mean of its divisors is an integer number (237540).

2^2575221 is an apocalyptic number.

It is an amenable number.

2575221 is a deficient number, since it is larger than the sum of its proper divisors (1225419).

2575221 is a wasteful number, since it uses less digits than its factorization.

2575221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156.

The product of its digits is 1400, while the sum is 24.

The square root of 2575221 is about 1604.7495131640. The cubic root of 2575221 is about 137.0686604173.

The spelling of 2575221 in words is "two million, five hundred seventy-five thousand, two hundred twenty-one".