8533540 has 24 divisors (see below), whose sum is σ = 18539640. Its totient is φ = 3295488.

The previous prime is 8533537. The next prime is 8533543. The reversal of 8533540 is 453358.

It is an interprime number because it is at equal distance from previous prime (8533537) and next prime (8533543).

It can be written as a sum of positive squares in 4 ways, for example, as 1679616 + 6853924 = 1296^2 + 2618^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8533499 and 8533508.

It is not an unprimeable number, because it can be changed into a prime (8533543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6777 + ... + 7936.

It is an arithmetic number, because the mean of its divisors is an integer number (772485).

Almost surely, 2^8533540 is an apocalyptic number.

It is an amenable number.

8533540 is an abundant number, since it is smaller than the sum of its proper divisors (10006100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8533540 is a wasteful number, since it uses less digits than its factorization.

8533540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14751 (or 14749 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 8533540 is about 2921.2223468952. Note that the first 3 decimals coincide. The cubic root of 8533540 is about 204.3508316522.

Adding to 8533540 its reverse (453358), we get a palindrome (8986898).

The spelling of 8533540 in words is "eight million, five hundred thirty-three thousand, five hundred forty".