87536533 has 4 divisors (see below), whose sum is σ = 100041760. Its totient is φ = 75031308.

The previous prime is 87536521. The next prime is 87536543. The reversal of 87536533 is 33563578.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87536533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87536543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6252603 + ... + 6252616.

It is an arithmetic number, because the mean of its divisors is an integer number (25010440).

Almost surely, 2^87536533 is an apocalyptic number.

It is an amenable number.

87536533 is a deficient number, since it is larger than the sum of its proper divisors (12505227).

87536533 is a wasteful number, since it uses less digits than its factorization.

87536533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12505226.

The product of its digits is 226800, while the sum is 40.

The square root of 87536533 is about 9356.0960341373. The cubic root of 87536533 is about 444.0137785541.

The spelling of 87536533 in words is "eighty-seven million, five hundred thirty-six thousand, five hundred thirty-three".