9987533 has 2 divisors, whose sum is σ = 9987534. Its totient is φ = 9987532.

The previous prime is 9987511. The next prime is 9987539. The reversal of 9987533 is 3357899.

9987533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9653449 + 334084 = 3107^2 + 578^2 .

It is an emirp because it is prime and its reverse (3357899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9987533 - 2¹⁴ = 9971149 is a prime.

It is a Chen prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9987539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4993766 + 4993767.

It is an arithmetic number, because the mean of its divisors is an integer number (4993767).

Almost surely, 2^9987533 is an apocalyptic number.

It is an amenable number.

9987533 is a deficient number, since it is larger than the sum of its proper divisors (1).

9987533 is an equidigital number, since it uses as much as digits as its factorization.

9987533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 44.

The square root of 9987533 is about 3160.3058396301. The cubic root of 9987533 is about 215.3539006470.

The spelling of 9987533 in words is "nine million, nine hundred eighty-seven thousand, five hundred thirty-three".