2576221 has 2 divisors, whose sum is σ = 2576222. Its totient is φ = 2576220.

The previous prime is 2576219. The next prime is 2576227. The reversal of 2576221 is 1226752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2576025 + 196 = 1605^2 + 14^2 .

It is a cyclic number.

It is not a de Polignac number, because 2576221 - 2¹ = 2576219 is a prime.

Together with 2576219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2576227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1288110 + 1288111.

It is an arithmetic number, because the mean of its divisors is an integer number (1288111).

2^2576221 is an apocalyptic number.

It is an amenable number.

2576221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2576221 is an equidigital number, since it uses as much as digits as its factorization.

2576221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 25.

The square root of 2576221 is about 1605.0610580286. The cubic root of 2576221 is about 137.0864001145.

The spelling of 2576221 in words is "two million, five hundred seventy-six thousand, two hundred twenty-one".