87855505 has 8 divisors (see below), whose sum is σ = 106761600. Its totient is φ = 69394416.

The previous prime is 87855479. The next prime is 87855511. The reversal of 87855505 is 50555878.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87855505 - 2²⁵ = 54301073 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110815 + ... + 111604.

It is an arithmetic number, because the mean of its divisors is an integer number (13345200).

Almost surely, 2^87855505 is an apocalyptic number.

It is an amenable number.

87855505 is a deficient number, since it is larger than the sum of its proper divisors (18906095).

87855505 is a wasteful number, since it uses less digits than its factorization.

87855505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222503.

The product of its (nonzero) digits is 280000, while the sum is 43.

The square root of 87855505 is about 9373.1267461824. The cubic root of 87855505 is about 444.5524347424.

The spelling of 87855505 in words is "eighty-seven million, eight hundred fifty-five thousand, five hundred five".