87855503 has 4 divisors (see below), whose sum is σ = 89513208. Its totient is φ = 86197800.

The previous prime is 87855479. The next prime is 87855511. The reversal of 87855503 is 30555878.

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 87855503 - 2²⁰ = 86806927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87855553) 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, 828773 + ... + 828878.

It is an arithmetic number, because the mean of its divisors is an integer number (22378302).

Almost surely, 2^87855503 is an apocalyptic number.

87855503 is a deficient number, since it is larger than the sum of its proper divisors (1657705).

87855503 is a wasteful number, since it uses less digits than its factorization.

87855503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657704.

The product of its (nonzero) digits is 168000, while the sum is 41.

The square root of 87855503 is about 9373.1266394944. The cubic root of 87855503 is about 444.5524313690.

The spelling of 87855503 in words is "eighty-seven million, eight hundred fifty-five thousand, five hundred three".