8531749 has 2 divisors, whose sum is σ = 8531750. Its totient is φ = 8531748.

The previous prime is 8531717. The next prime is 8531767. The reversal of 8531749 is 9471358.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8236900 + 294849 = 2870^2 + 543^2 .

It is a cyclic number.

It is not a de Polignac number, because 8531749 - 2⁵ = 8531717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8531849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4265874 + 4265875.

It is an arithmetic number, because the mean of its divisors is an integer number (4265875).

Almost surely, 2^8531749 is an apocalyptic number.

It is an amenable number.

8531749 is a deficient number, since it is larger than the sum of its proper divisors (1).

8531749 is an equidigital number, since it uses as much as digits as its factorization.

8531749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 37.

The square root of 8531749 is about 2920.9157810522. The cubic root of 8531749 is about 204.3365344224.

The spelling of 8531749 in words is "eight million, five hundred thirty-one thousand, seven hundred forty-nine".