87061533 has 12 divisors (see below), whose sum is σ = 125699040. Its totient is φ = 53576016.

The previous prime is 87061529. The next prime is 87061613. The reversal of 87061533 is 33516078.

It is a happy number.

It is not a de Polignac number, because 87061533 - 2² = 87061529 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 87061494 and 87061503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87061133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85353 + ... + 86366.

It is an arithmetic number, because the mean of its divisors is an integer number (10474920).

Almost surely, 2^87061533 is an apocalyptic number.

It is an amenable number.

87061533 is a deficient number, since it is larger than the sum of its proper divisors (38637507).

87061533 is a wasteful number, since it uses less digits than its factorization.

87061533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171748 (or 171735 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 87061533 is about 9330.6769850853. The cubic root of 87061533 is about 443.2092033179.

The spelling of 87061533 in words is "eighty-seven million, sixty-one thousand, five hundred thirty-three".