7522540 has 12 divisors (see below), whose sum is σ = 15797376. Its totient is φ = 3009008.

The previous prime is 7522531. The next prime is 7522573. The reversal of 7522540 is 452257.

It is a nialpdrome in base 14.

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, 188044 + ... + 188083.

It is an arithmetic number, because the mean of its divisors is an integer number (1316448).

Almost surely, 2^7522540 is an apocalyptic number.

It is an amenable number.

7522540 is an abundant number, since it is smaller than the sum of its proper divisors (8274836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7522540 is a wasteful number, since it uses less digits than its factorization.

7522540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376136 (or 376134 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 7522540 is about 2742.7249224084. The cubic root of 7522540 is about 195.9392773161.

Adding to 7522540 its reverse (452257), we get a palindrome (7974797).

The spelling of 7522540 in words is "seven million, five hundred twenty-two thousand, five hundred forty".