87512855 has 8 divisors (see below), whose sum is σ = 111192912. Its totient is φ = 65891968.

The previous prime is 87512851. The next prime is 87512897. The reversal of 87512855 is 55821578.

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 87512855 - 2² = 87512851 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 (87512851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 514697 + ... + 514866.

It is an arithmetic number, because the mean of its divisors is an integer number (13899114).

Almost surely, 2^87512855 is an apocalyptic number.

87512855 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

87512855 is a deficient number, since it is larger than the sum of its proper divisors (23680057).

87512855 is a wasteful number, since it uses less digits than its factorization.

87512855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029585.

The product of its digits is 112000, while the sum is 41.

The square root of 87512855 is about 9354.8305703524. The cubic root of 87512855 is about 443.9737407704.

The spelling of 87512855 in words is "eighty-seven million, five hundred twelve thousand, eight hundred fifty-five".