2543522 has 8 divisors (see below), whose sum is σ = 3824172. Its totient is φ = 1268800.

The previous prime is 2543509. The next prime is 2543537. The reversal of 2543522 is 2253452.

It can be written as a sum of positive squares in 2 ways, for example, as 2253001 + 290521 = 1501^2 + 539^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179 + ... + 2262.

2^2543522 is an apocalyptic number.

2543522 is a deficient number, since it is larger than the sum of its proper divisors (1280650).

2543522 is a wasteful number, since it uses less digits than its factorization.

2543522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2964.

The product of its digits is 2400, while the sum is 23.

The square root of 2543522 is about 1594.8423119544. The cubic root of 2543522 is about 136.5039334785.

Adding to 2543522 its reverse (2253452), we get a palindrome (4796974).

The spelling of 2543522 in words is "two million, five hundred forty-three thousand, five hundred twenty-two".