2580521 has 2 divisors, whose sum is σ = 2580522. Its totient is φ = 2580520.

The previous prime is 2580511. The next prime is 2580527. The reversal of 2580521 is 1250852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1651225 + 929296 = 1285^2 + 964^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2580521 is a prime.

It is not a weakly prime, because it can be changed into another prime (2580527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1290260 + 1290261.

It is an arithmetic number, because the mean of its divisors is an integer number (1290261).

2^2580521 is an apocalyptic number.

It is an amenable number.

2580521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2580521 is an equidigital number, since it uses as much as digits as its factorization.

2580521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 2580521 is about 1606.4000124502. The cubic root of 2580521 is about 137.1626285462.

The spelling of 2580521 in words is "two million, five hundred eighty thousand, five hundred twenty-one".