87585155 has 16 divisors (see below), whose sum is σ = 126439680. Its totient is φ = 56896992.

The previous prime is 87585077. The next prime is 87585161. The reversal of 87585155 is 55158578.

It is a cyclic number.

It is not a de Polignac number, because 87585155 - 2⁸ = 87584899 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65189 + ... + 66518.

It is an arithmetic number, because the mean of its divisors is an integer number (7902480).

Almost surely, 2^87585155 is an apocalyptic number.

87585155 is a deficient number, since it is larger than the sum of its proper divisors (38854525).

87585155 is a wasteful number, since it uses less digits than its factorization.

87585155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131738.

The product of its digits is 280000, while the sum is 44.

The square root of 87585155 is about 9358.6940862494. The cubic root of 87585155 is about 444.0959722062.

The spelling of 87585155 in words is "eighty-seven million, five hundred eighty-five thousand, one hundred fifty-five".