7528531 has 2 divisors, whose sum is σ = 7528532. Its totient is φ = 7528530.

The previous prime is 7528529. The next prime is 7528537. The reversal of 7528531 is 1358257.

It is a weak prime.

It is an emirp because it is prime and its reverse (1358257) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7528531 - 2¹ = 7528529 is a prime.

It is a super-2 number, since 2×7528531² = 113357558035922, which contains 22 as substring.

Together with 7528529, it forms a pair of twin primes.

7528531 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7528493 and 7528502.

It is not a weakly prime, because it can be changed into another prime (7528537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3764265 + 3764266.

It is an arithmetic number, because the mean of its divisors is an integer number (3764266).

Almost surely, 2^7528531 is an apocalyptic number.

7528531 is a deficient number, since it is larger than the sum of its proper divisors (1).

7528531 is an equidigital number, since it uses as much as digits as its factorization.

7528531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8400, while the sum is 31.

The square root of 7528531 is about 2743.8168670668. The cubic root of 7528531 is about 195.9912792871.

The spelling of 7528531 in words is "seven million, five hundred twenty-eight thousand, five hundred thirty-one".