87056559 has 8 divisors (see below), whose sum is σ = 128972720. Its totient is φ = 58037688.

The previous prime is 87056531. The next prime is 87056561. The reversal of 87056559 is 95565078.

87056559 is a `hidden beast` number, since 87 + 0 + 565 + 5 + 9 = 666.

It is not a de Polignac number, because 87056559 - 2¹¹ = 87054511 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 (87056509) 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, 1612132 + ... + 1612185.

It is an arithmetic number, because the mean of its divisors is an integer number (16121590).

Almost surely, 2^87056559 is an apocalyptic number.

87056559 is a deficient number, since it is larger than the sum of its proper divisors (41916161).

87056559 is a wasteful number, since it uses less digits than its factorization.

87056559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3224326 (or 3224320 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The square root of 87056559 is about 9330.4104411328. The cubic root of 87056559 is about 443.2007626802.

The spelling of 87056559 in words is "eighty-seven million, fifty-six thousand, five hundred fifty-nine".