7528003 has 4 divisors (see below), whose sum is σ = 8603440. Its totient is φ = 6452568.

The previous prime is 7527977. The next prime is 7528007. The reversal of 7528003 is 3008257.

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 7528003 - 2²¹ = 5430851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7528007) 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 3 ways as a sum of consecutive naturals, for example, 537708 + ... + 537721.

It is an arithmetic number, because the mean of its divisors is an integer number (2150860).

Almost surely, 2^7528003 is an apocalyptic number.

7528003 is a deficient number, since it is larger than the sum of its proper divisors (1075437).

7528003 is a wasteful number, since it uses less digits than its factorization.

7528003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075436.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 7528003 is about 2743.7206490457. The cubic root of 7528003 is about 195.9866973479.

It can be divided in two parts, 75 and 28003, that multiplied together give a triangular number (2100225 = T₂₀₄₉).

The spelling of 7528003 in words is "seven million, five hundred twenty-eight thousand, three".