87163500 has 48 divisors (see below), whose sum is σ = 253824480. Its totient is φ = 23243200.

The previous prime is 87163493. The next prime is 87163501. The reversal of 87163500 is 536178.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (87163501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27555 + ... + 30554.

It is an arithmetic number, because the mean of its divisors is an integer number (5288010).

Almost surely, 2^87163500 is an apocalyptic number.

It is an amenable number.

87163500 is an abundant number, since it is smaller than the sum of its proper divisors (166660980).

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

87163500 is a wasteful number, since it uses less digits than its factorization.

87163500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58131 (or 58119 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 87163500 is about 9336.1394591126. The cubic root of 87163500 is about 443.3821655873.

Adding to 87163500 its reverse (536178), we get a palindrome (87699678).

The spelling of 87163500 in words is "eighty-seven million, one hundred sixty-three thousand, five hundred".