87171536 has 10 divisors (see below), whose sum is σ = 168894882. Its totient is φ = 43585760.

The previous prime is 87171527. The next prime is 87171559. The reversal of 87171536 is 63517178.

It can be written as a sum of positive squares in only one way, i.e., 86862400 + 309136 = 9320^2 + 556^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 87171536.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2724095 + ... + 2724126.

Almost surely, 2^87171536 is an apocalyptic number.

It is an amenable number.

87171536 is a deficient number, since it is larger than the sum of its proper divisors (81723346).

87171536 is a wasteful number, since it uses less digits than its factorization.

87171536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5448229 (or 5448223 counting only the distinct ones).

The product of its digits is 35280, while the sum is 38.

The square root of 87171536 is about 9336.5698198000. The cubic root of 87171536 is about 443.3957909756.

The spelling of 87171536 in words is "eighty-seven million, one hundred seventy-one thousand, five hundred thirty-six".