87289555 has 8 divisors (see below), whose sum is σ = 104878800. Its totient is φ = 69744096.

The previous prime is 87289547. The next prime is 87289561. The reversal of 87289555 is 55598278.

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 87289555 - 2³ = 87289547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87289499 and 87289508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6385 + ... + 14674.

It is an arithmetic number, because the mean of its divisors is an integer number (13109850).

Almost surely, 2^87289555 is an apocalyptic number.

87289555 is a deficient number, since it is larger than the sum of its proper divisors (17589245).

87289555 is a wasteful number, since it uses less digits than its factorization.

87289555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21893.

The product of its digits is 1008000, while the sum is 49.

The square root of 87289555 is about 9342.8879368212. The cubic root of 87289555 is about 443.5958009497.

The spelling of 87289555 in words is "eighty-seven million, two hundred eighty-nine thousand, five hundred fifty-five".