8533531 has 2 divisors, whose sum is σ = 8533532. Its totient is φ = 8533530.

The previous prime is 8533517. The next prime is 8533537. The reversal of 8533531 is 1353358.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8533531 - 2¹¹ = 8531483 is a prime.

It is a super-2 number, since 2×8533531² = 145642302655922, which contains 22 as substring.

8533531 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 8533531.

It is not a weakly prime, because it can be changed into another prime (8533537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4266765 + 4266766.

It is an arithmetic number, because the mean of its divisors is an integer number (4266766).

Almost surely, 2^8533531 is an apocalyptic number.

8533531 is a deficient number, since it is larger than the sum of its proper divisors (1).

8533531 is an equidigital number, since it uses as much as digits as its factorization.

8533531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 28.

The square root of 8533531 is about 2921.2208064438. The cubic root of 8533531 is about 204.3507598118.

Adding to 8533531 its reverse (1353358), we get a palindrome (9886889).

The spelling of 8533531 in words is "eight million, five hundred thirty-three thousand, five hundred thirty-one".