2581522 has 16 divisors (see below), whose sum is σ = 4095360. Its totient is φ = 1218448.

The previous prime is 2581507. The next prime is 2581531. The reversal of 2581522 is 2251852.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2253 + ... + 3199.

It is an arithmetic number, because the mean of its divisors is an integer number (255960).

2^2581522 is an apocalyptic number.

2581522 is a deficient number, since it is larger than the sum of its proper divisors (1513838).

2581522 is a wasteful number, since it uses less digits than its factorization.

2581522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025.

The product of its digits is 1600, while the sum is 25.

The square root of 2581522 is about 1606.7115484741. The cubic root of 2581522 is about 137.1803616632.

The spelling of 2581522 in words is "two million, five hundred eighty-one thousand, five hundred twenty-two".