7522543 has 4 divisors (see below), whose sum is σ = 8597200. Its totient is φ = 6447888.

The previous prime is 7522531. The next prime is 7522573. The reversal of 7522543 is 3452257.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7522543 - 2²¹ = 5425391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7522573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537318 + ... + 537331.

It is an arithmetic number, because the mean of its divisors is an integer number (2149300).

Almost surely, 2^7522543 is an apocalyptic number.

7522543 is a deficient number, since it is larger than the sum of its proper divisors (1074657).

7522543 is a wasteful number, since it uses less digits than its factorization.

7522543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074656.

The product of its digits is 8400, while the sum is 28.

The square root of 7522543 is about 2742.7254693097. The cubic root of 7522543 is about 195.9393033630.

It can be divided in two parts, 752254 and 3, that added together give a palindrome (752257).

The spelling of 7522543 in words is "seven million, five hundred twenty-two thousand, five hundred forty-three".