2567521 has 8 divisors (see below), whose sum is σ = 2829888. Its totient is φ = 2310000.

The previous prime is 2567519. The next prime is 2567531. The reversal of 2567521 is 1257652.

2567521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2567521 - 2¹ = 2567519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2567521.

It is not an unprimeable number, because it can be changed into a prime (2567531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45 + ... + 2266.

It is an arithmetic number, because the mean of its divisors is an integer number (353736).

2^2567521 is an apocalyptic number.

It is an amenable number.

2567521 is a deficient number, since it is larger than the sum of its proper divisors (262367).

2567521 is a wasteful number, since it uses less digits than its factorization.

2567521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2423.

The product of its digits is 4200, while the sum is 28.

The square root of 2567521 is about 1602.3485887908. The cubic root of 2567521 is about 136.9319106835.

It can be divided in two parts, 256 and 7521, that added together give a palindrome (7777).

The spelling of 2567521 in words is "two million, five hundred sixty-seven thousand, five hundred twenty-one".