87285111 has 4 divisors (see below), whose sum is σ = 116380152. Its totient is φ = 58190072.

The previous prime is 87285103. The next prime is 87285113. The reversal of 87285111 is 11158278.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87285111 - 2³ = 87285103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87285113) 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, 14547516 + ... + 14547521.

It is an arithmetic number, because the mean of its divisors is an integer number (29095038).

Almost surely, 2^87285111 is an apocalyptic number.

87285111 is a deficient number, since it is larger than the sum of its proper divisors (29095041).

87285111 is a wasteful number, since it uses less digits than its factorization.

87285111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29095040.

The product of its digits is 4480, while the sum is 33.

The square root of 87285111 is about 9342.6501058319. The cubic root of 87285111 is about 443.5882728508.

Subtracting from 87285111 its sum of digits (33), we obtain a triangular number (87285078 = T₁₃₂₁₂).

The spelling of 87285111 in words is "eighty-seven million, two hundred eighty-five thousand, one hundred eleven".