7528945 has 8 divisors (see below), whose sum is σ = 9279144. Its totient is φ = 5860224.

The previous prime is 7528933. The next prime is 7528949. The reversal of 7528945 is 5498257.

It can be written as a sum of positive squares in 4 ways, for example, as 303601 + 7225344 = 551^2 + 2688^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7528945 - 2⁷ = 7528817 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7528898 and 7528907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7528949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20164 + ... + 20533.

It is an arithmetic number, because the mean of its divisors is an integer number (1159893).

Almost surely, 2^7528945 is an apocalyptic number.

It is an amenable number.

7528945 is a deficient number, since it is larger than the sum of its proper divisors (1750199).

7528945 is a wasteful number, since it uses less digits than its factorization.

7528945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40739.

The product of its digits is 100800, while the sum is 40.

The square root of 7528945 is about 2743.8923083824. The cubic root of 7528945 is about 195.9948717942.

The spelling of 7528945 in words is "seven million, five hundred twenty-eight thousand, nine hundred forty-five".