855015087 has 16 divisors (see below), whose sum is σ = 1190407680. Its totient is φ = 544850592.

The previous prime is 855015059. The next prime is 855015097. The reversal of 855015087 is 780510558.

It is not a de Polignac number, because 855015087 - 2²⁷ = 720797359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855015047) 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, 124089 + ... + 130797.

It is an arithmetic number, because the mean of its divisors is an integer number (74400480).

Almost surely, 2^855015087 is an apocalyptic number.

855015087 is a deficient number, since it is larger than the sum of its proper divisors (335392593).

855015087 is a wasteful number, since it uses less digits than its factorization.

855015087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8582.

The product of its (nonzero) digits is 56000, while the sum is 39.

The square root of 855015087 is about 29240.6410155455. The cubic root of 855015087 is about 949.1275783836.

The spelling of 855015087 in words is "eight hundred fifty-five million, fifteen thousand, eighty-seven".